{"_id": {"$oid": "6a671d25338dadb0be4e83e5"}, "test_id": "T1154", "benchmark": "business_letters", "date": "2026-06-22", "tags": {"document-type": ["letter"], "writing": ["typed", "handwritten"], "century": [20], "language": ["de"], "layout": ["prose"], "entry-type": ["person", "location"], "task": ["information-extraction"]}, "contributors": ["eric_decker", "maximilian_hindermann", "lea_kasper", "anthea_alberto", "pema_frick", "jose_luis_losada_palenzuela", "sorin_marti", "elena_spadini"], "hidden": false, "config": {"provider": "scicore", "model": "qwen35-397b-a17b-fp8", "dataclass": "Document", "temperature": 0.0, "role_description": "You are a historian with keyword knowledge and an expert in the field of 20th century Swiss history", "prompt_file": "prompt.txt", "rules": "{\"skip_signatures\": false, \"skip_non_signatures\": true}", "legacy_test": false}, "prompt": "            IDENTITY and PURPOSE:\n\n            You are presented with a series of images constituting a historical letter. Your task is to extract the\n            values of the following keys from the letter and return them in a JSON file where the values\n            corresponding to each key should be stored as a list, even if there is only a single value for a\n            key:\n\n            - letter_title: Title of the letter.\n            - sender_persons: Name(s) of the person(s) who wrote the letter.\n            - send_date: The exact or approximate date the letter was written.\n            - receiver_persons: Name(s) of the person(s) who received the letter.\n\n            Take a deep breath and think step by step about how to best accomplish this goal. Map out all the claims\n            and implications on a virtual whiteboard in your mind. Do not use OCR. Use the ISO format YYYY-MM-DD for\n            dates. If a piece of information is not included in the letter, set the value for the corresponding key\n            to \"null\". Do not return anything except the JSON file.\n\n            EXAMPLE:\n\n            {\n                \"letter_title\": [\"Petition for Environmental Protection\"],\n                \"send_date\": [\"1993-03-12\"],\n                \"sender_persons\": [\"Lisa Simpson\"],\n                \"receiver_persons\": [\"Mayor Joe Quimby\", \"Seymour Skinner\"],\n            }\n\n            OUTPUT:", "results": {"text": "{\"metadata\":{\"send_date\":[\"1932-10-07\"],\"letter_title\":null,\"sender_persons\":[\"Ad. Meier\"],\"receiver_persons\":[\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\"]}}", "model": "qwen35-397b-a17b-fp8", "provider": "scicore", "finish_reason": "stop", "usage": {"input_tokens": 3225, "output_tokens": 6469, "total_tokens": 9694}, "duration": 96.2037672996521, "timestamp": "2026-06-22T15:31:51.280788", "parsed": {"metadata": {"send_date": ["1932-10-07"], "letter_title": null, "sender_persons": ["Ad. Meier"], "receiver_persons": ["Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft"], "document_number": "letter53"}}, "conversation_id": "da3abae1-b9ad-4167-9ffe-21ce6d176bd8", "score": {"send_date_tp": 1, "send_date_fp": 0, "send_date_fn": 0, "sender_persons_tp": 0, "sender_persons_fp": 1, "sender_persons_fn": 1, "receiver_persons_tp": 0, "receiver_persons_fp": 1, "receiver_persons_fn": 0}, "raw_response": "{\"id\":\"chatcmpl-8cd553f80e599e63\",\"choices\":[{\"finish_reason\":\"stop\",\"index\":0,\"logprobs\":null,\"message\":{\"content\":\"{\\n    \\\"metadata\\\": {\\n        \\\"send_date\\\": [\\n            \\\"1932-10-07\\\"\\n        ]\\n    , \\\"receiver_persons\\\": [\\n            \\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\"\\n        ]\\n    , \\\"letter_title\\\": null, \\\"sender_persons\\\": [\\n            \\\"Ad. Meier\\\"\\n        ]\\n    }\\n}\",\"refusal\":null,\"role\":\"assistant\",\"annotations\":null,\"audio\":null,\"function_call\":null,\"tool_calls\":null,\"parsed\":{\"metadata\":{\"send_date\":[\"1932-10-07\"],\"letter_title\":null,\"sender_persons\":[\"Ad. Meier\"],\"receiver_persons\":[\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\"]}},\"reasoning\":\"The user wants me to extract specific information from the provided image of a historical letter and format it as a JSON object.\\n\\n**1. Analyze the Image:**\\n*   **Header:** \\\"BASLER PERSONENSCHIFFAHRTS-GESELLSCHAFT\\\" (Basel Passenger Shipping Company). This is the organization sending the letter.\\n*   **Date:** \\\"Basel, den 7. Oktober 1932.\\\" (Basel, October 7, 1932).\\n*   **Recipient:** \\\"An die Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft Basel\\\" (To the board members of the Basel Passenger Shipping Company Basel).\\n*   **Salutation:** \\\"Sehr geehrte Herren,\\\" (Dear Sirs,).\\n*   **Body Text:**\\n    *   \\\"Als Beilage erhalten Sie Copie des Expos\u00e9 der B.R.S.A.G. vom 4. Oktober 1932 gem\u00e4ss Beschluss 2 und Auftrag b des Protokolls der Vorstandssitzung vom 22. September 1932.\\\" (As an enclosure you receive a copy of the Expos\u00e9 of the B.R.S.A.G. from October 4, 1932 according to Resolution 2 and Order b of the minutes of the board meeting from September 22, 1932.)\\n    *   \\\"Wir bitten Sie, sich bis 15. Oktober schriftlich zu \u00e4ussern, ob Ihnen das Expos\u00e9 gen\u00fcgt und ob Sie einverstanden sind, dass Ihr Pr\u00e4sident gem\u00e4ss Beschluss 3 & 4 des obigen Protokolls in weitere Verhandlungen mit der B.R.S.A.G. eintritt.\\\" (We ask you to express yourself in writing by October 15, whether the Expos\u00e9 is sufficient for you and whether you agree that your President according to Resolution 3 & 4 of the above minutes enters into further negotiations with the B.R.S.A.G.)\\n*   **Closing:** \\\"Hochachtungsvoll\\\" (Sincerely).\\n*   **Sender Signature Block:**\\n    *   \\\"Basler Personenschiffahrtsgesellschaft\\\" (stamped).\\n    *   \\\"Der Gesch\u00e4ftsf\u00fchrer:\\\" (The Managing Director:).\\n    *   Signature: Looks like \\\"Ad. Meier\\\" or similar. It's handwritten. Let's look closer. It looks like \\\"Ad. Meier\\\" or \\\"Ant. Meier\\\". Wait, let me re-examine. It looks like \\\"Ad. Meier\\\" or maybe \\\"A. Meier\\\". Actually, looking very closely at the cursive, it looks like \\\"Ad. Meier\\\" or \\\"Ant. Meier\\\". Let's assume it's a person's name. Wait, the prompt asks for `sender_persons`. The text says \\\"Der Gesch\u00e4ftsf\u00fchrer\\\" (The Managing Director). The signature is illegible but clearly a person. However, usually, if the name isn't clearly typed, I might have to infer or leave it if I can't read it. But looking at the prompt instructions, I need to extract values. Let's look really closely at the signature. It looks like \\\"Ad. Meier\\\" or \\\"A. Meier\\\". Actually, it looks like \\\"Ant. Meier\\\" or \\\"Ad. Meier\\\". Let's look at the context. This is a Swiss document. \\\"Ad.\\\" could be Adolf or Adrian. \\\"Ant.\\\" could be Anton. Let's look at the strokes. It looks like \\\"Ad. Meier\\\". Wait, let me look at the very bottom right. \\\"Der Gesch\u00e4ftsf\u00fchrer\\\". The signature is above it. It looks like \\\"Ad. Meier\\\". Let's assume the sender is the organization \\\"Basler Personenschiffahrts-Gesellschaft\\\" represented by the Managing Director. The prompt asks for `sender_persons`. If a specific name isn't clear, I might just put the title or the organization if appropriate, but the key is `sender_persons`. The signature is there. Let's try to decipher it. It looks like \\\"Ad. Meier\\\". Or maybe \\\"A. Meier\\\". Let's look at the first letter. It's an 'A'. Then 'd' or 'n'. Then 't' or 'l'. It looks like \\\"Ad. Meier\\\". Let's assume \\\"Ad. Meier\\\" for now, or perhaps just note the organization. Wait, the prompt example has \\\"Lisa Simpson\\\". So it expects a person's name. If I can't read it perfectly, I should be careful. Let's look at the signature again. It looks like \\\"Ad. Meier\\\". Actually, it looks like \\\"Ant. Meier\\\". No, the loop suggests 'd'. Let's go with \\\"Ad. Meier\\\" or just \\\"Der Gesch\u00e4ftsf\u00fchrer\\\" if I can't be sure. But wait, the prompt says \\\"Name(s) of the person(s) who wrote the letter.\\\" The letter is signed by the Managing Director. The name is handwritten. It looks like \\\"Ad. Meier\\\". Let's look at the stamp. \\\"Basler Personenschiffahrtsgesellschaft\\\".\\n    *   Actually, let's look at the signature again. It looks like \\\"Ad. Meier\\\". Wait, is it \\\"A. Meier\\\"? The first part is scribbly. It could be \\\"Ant. Meier\\\". Let's look at common Swiss names. Anton Meier is common. Adolf Meier is common. Let's look at the strokes. A-d-t? No. A-n-t? Maybe. A-d? Maybe. Let's look at the last name. \\\"Meier\\\" is clear. The first part looks like \\\"Ad\\\". Let's assume \\\"Ad. Meier\\\".\\n    *   Wait, is there a typed name? No.\\n    *   Let's reconsider the `sender_persons`. The letter is from the \\\"Basler Personenschiffahrts-Gesellschaft\\\". The signatory is \\\"Der Gesch\u00e4ftsf\u00fchrer\\\" (The Managing Director). The signature is illegible to a high degree of certainty for a non-expert, but looks like \\\"Ad. Meier\\\". However, often in these tasks, if the name is not clearly printed, it might be safer to use the organization or the title if the name is unreadable. But the prompt asks for \\\"Name(s) of the person(s)\\\". Let's look really closely at crop 6. It looks like \\\"Ad. Meier\\\". Or \\\"Ant. Meier\\\". Let's assume \\\"Ad. Meier\\\". Actually, looking at the very end, it looks like \\\"Ad. Meier\\\". Let's try to search my internal knowledge base for \\\"Basler Personenschiffahrts-Gesellschaft 1932 Gesch\u00e4ftsf\u00fchrer\\\". In 1932, the director might have been someone specific. But I shouldn't use external tools. I must rely on the image.\\n    *   Let's look at the signature again. It looks like \\\"Ad. Meier\\\". Or maybe \\\"A. Meier\\\". Let's assume the name is \\\"Ad. Meier\\\".\\n    *   Wait, let's look at the prompt again. \\\"sender_persons: Name(s) of the person(s) who wrote the letter.\\\"\\n    *   The letter is signed by the Managing Director. The name is handwritten. It looks like \\\"Ad. Meier\\\".\\n    *   Let's look at the recipient. \\\"An die Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\" (To the board members of the Basel Passenger Shipping Company). So the receiver is a group of people, the board members.\\n\\n**2. Extract Fields:**\\n\\n*   **letter_title:** There is no explicit title like \\\"Re: ...\\\" or a subject line. The first line is the organization name. The prompt example has \\\"Petition for Environmental Protection\\\". This letter doesn't have a title. I should set it to \\\"null\\\" or maybe derive a subject? The prompt says \\\"Title of the letter.\\\" If there isn't one, \\\"null\\\" is appropriate. Wait, looking at the example, it's a specific title. This is a circular/inter-office memo. It doesn't have a title. I will set it to `null`.\\n*   **sender_persons:** The letter is signed by \\\"Der Gesch\u00e4ftsf\u00fchrer\\\" (The Managing Director). The signature looks like \\\"Ad. Meier\\\". I will include \\\"Ad. Meier\\\" or \\\"Der Gesch\u00e4ftsf\u00fchrer\\\" if the name is too ambiguous. Let's look really closely. It looks like \\\"Ad. Meier\\\". I will use \\\"Ad. Meier\\\". Wait, is it \\\"Ant. Meier\\\"? The loop goes up and down. It looks like an 'A', then a 'd'. Let's go with \\\"Ad. Meier\\\". Actually, looking at the very bottom right, the signature is \\\"Ad. Meier\\\". Wait, let me look at the full image again. The signature is \\\"Ad. Meier\\\". Or maybe \\\"A. Meier\\\". Let's assume \\\"Ad. Meier\\\".\\n    *   Actually, let's look at the text \\\"Basler Personenschiffahrts-Gesellschaft\\\" at the top. That's the sender organization. The prompt asks for `sender_persons`. Usually, if it's an organization, I might put the organization name if no person is listed, but here a person signed it. The signature is \\\"Ad. Meier\\\". I'll use that.\\n    *   Wait, is it possible the signature is \\\"Ant. Meier\\\"? The letter 't' might be crossed. I don't see a cross. It looks like 'd'. So \\\"Ad.\\\".\\n    *   Let's check if the name is typed anywhere. No.\\n    *   Let's check the recipient again. \\\"An die Vorstandsmitglieder...\\\" (To the board members...). This is a group.\\n*   **send_date:** \\\"Basel, den 7. Oktober 1932.\\\" -> \\\"1932-10-07\\\".\\n*   **receiver_persons:** \\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\" (Board members of the Basel Passenger Shipping Company). This is a group title. I will extract \\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\n\\n**Refining the Extraction:**\\n\\n*   **letter_title:** The document doesn't have a subject line. It starts with \\\"An die...\\\". So `null`.\\n*   **sender_persons:** The text says \\\"Basler Personenschiffahrts-Gesellschaft\\\" at the top. The signature block says \\\"Basler Personenschiffahrtsgesellschaft / Der Gesch\u00e4ftsf\u00fchrer / [Signature]\\\". The signature looks like \\\"Ad. Meier\\\". I will include \\\"Ad. Meier\\\". Or perhaps just \\\"Der Gesch\u00e4ftsf\u00fchrer\\\" if the name is illegible. But \\\"Ad. Meier\\\" is a reasonable transcription. Let's look at the signature one more time. It looks like \\\"Ad. Meier\\\".\\n*   **send_date:** \\\"1932-10-07\\\".\\n*   **receiver_persons:** \\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\n\\nLet's double check the signature. It looks like \\\"Ad. Meier\\\". Wait, could it be \\\"Ant. Meier\\\"? The loop is high. It could be an 'l'. \\\"Al. Meier\\\"? Unlikely. \\\"Ad.\\\" is standard for Adolf or Adrian. \\\"Ant.\\\" for Anton. The stroke goes up, loops, comes down. That's a 'd' or 'l' or 'h'. If it's 'Ad', the 'd' has a loop. If it's 'Ant', there's usually a cross. I don't see a cross. So \\\"Ad.\\\" is most likely.\\nActually, looking at the very bottom right, the signature looks like \\\"Ad. Meier\\\".\\nWait, let's look at the prompt requirements again. \\\"sender_persons: Name(s) of the person(s) who wrote the letter.\\\"\\nIf I can't be 100% sure of the handwritten name, maybe I should list the organization or the title? But the example shows a person's name.\\nLet's look at the signature again. It looks like \\\"Ad. Meier\\\".\\nActually, let's look at the text \\\"Basler Personenschiffahrts-Gesellschaft\\\" at the top. That is the letterhead.\\nThe signature block has a stamp \\\"Basler Personenschiffahrtsgesellschaft\\\" and \\\"Der Gesch\u00e4ftsf\u00fchrer\\\".\\nSo the sender is the Managing Director of the BPSG.\\nI will put \\\"Ad. Meier\\\" as the sender person. If I'm unsure, I might just put \\\"Der Gesch\u00e4ftsf\u00fchrer\\\" but that's a title.\\nLet's try to interpret the signature as \\\"Ad. Meier\\\".\\n\\nLet's re-read the recipient part. \\\"An die Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\nSo the receiver is \\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\n\\nLet's re-read the date. \\\"Basel, den 7. Oktober 1932.\\\" -> 1932-10-07.\\n\\nLet's re-read the title. There is no title. So `null`.\\n\\nOne detail: The prompt asks for `sender_persons`. The letter is from the company, signed by the manager.\\nIf I look at the signature, it looks like \\\"Ad. Meier\\\".\\nLet's assume the name is \\\"Ad. Meier\\\".\\n\\nWait, is there any other person mentioned? \\\"Ihr Pr\u00e4sident\\\" (Your President). This refers to the President of the Board (the recipients' board). Not the sender.\\n\\nSo,\\n`letter_title`: null\\n`sender_persons`: [\\\"Ad. Meier\\\"] (or maybe just the organization if the name is too ambiguous, but the prompt asks for persons. I'll provide the best guess of the signature). Actually, looking really closely at crop 6, the signature looks like \\\"Ad. Meier\\\". The 'A' is distinct. The 'd' is looped. The 'Meier' is cursive.\\n`send_date`: [\\\"1932-10-07\\\"]\\n`receiver_persons`: [\\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\"]\\n\\nLet's check if \\\"Basler Personenschiffahrts-Gesellschaft\\\" should be in `sender_persons`. The prompt asks for \\\"Name(s) of the person(s)\\\". Usually, organizations are not persons. But sometimes in these datasets, the letterhead entity is considered the sender. However, there is a specific \\\"Der Gesch\u00e4ftsf\u00fchrer\\\" line. I will stick with the person's name if legible. If not, maybe the title.\\nActually, looking at the signature, it could be \\\"Ant. Meier\\\". The loop goes high. But no cross.\\nLet's look at the letter \\\"Basler Personenschiffahrts-Gesellschaft\\\".\\nMaybe I should include the organization in the sender list? No, the key is `sender_persons`.\\nI will extract \\\"Ad. Meier\\\".\\n\\nWait, let's look at the recipient again. \\\"An die Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\nThis translates to \\\"To the board members of the Basel Passenger Shipping Company\\\".\\nSo `receiver_persons`: [\\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\"].\\n\\nLet's refine the `sender_persons`. The signature is \\\"Ad. Meier\\\".\\nIs it possible the signature is \\\"A. Meier\\\"? The letter after A looks like a 'd'.\\nI will use \\\"Ad. Meier\\\".\\n\\nOne more check on the date. \\\"7. Oktober 1932\\\". Correct.\\n\\nOne more check on the title. There is no subject line. So `null`.\\n\\nFinal check of the JSON structure.\\nKeys: `letter_title`, `sender_persons`, `send_date`, `receiver_persons`.\\nValues: Lists of strings.\\n\\nLet's consider if \\\"Basler Personenschiffahrts-Gesellschaft\\\" is the sender. The letterhead says it. The stamp says it. The text says \\\"Wir bitten Sie...\\\" (We ask you...). The \\\"We\\\" refers to the company/management.\\nIf I can't read the signature clearly, maybe I should omit it or use the title?\\nThe prompt says \\\"Name(s) of the person(s) who wrote the letter.\\\"\\nIf the signature is illegible, `null` or the title?\\nLet's look at the signature again. It looks like \\\"Ad. Meier\\\".\\nActually, it looks like \\\"Ant. Meier\\\" with a very faint cross or no cross.\\nLet's assume \\\"Ad. Meier\\\".\\nWait, could it be \\\"A. Meier\\\"?\\nLet's look at the letter \\\"Basler Personenschiffahrts-Gesellschaft\\\".\\nMaybe the sender is just the organization?\\nBut the key is `sender_persons`.\\nI will put \\\"Ad. Meier\\\" as the sender.\\n\\nWait, looking at the signature again, it looks like \\\"Ad. Meier\\\".\\nActually, let's look at the full image. The signature is \\\"Ad. Meier\\\".\\nOkay, I'll go with that.\\n\\nOne detail: \\\"receiver_persons\\\". The text says \\\"An die Vorstandsmitglieder...\\\".\\nSo the receiver is the board members.\\nI will extract \\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\n\\nLet's double check the date format. ISO YYYY-MM-DD. \\\"1932-10-07\\\".\\n\\nLet's double check the title. \\\"null\\\".\\n\\nLet's double check the sender. \\\"Ad. Meier\\\".\\n\\nWait, is it possible that the signature is \\\"Ant. Meier\\\"?\\nLet's look at the letter 't' in \\\"September\\\" or \\\"Oktober\\\". The 't' is crossed.\\nIn the signature, I don't see a cross. So likely 'd'. \\\"Ad.\\\".\\nSo \\\"Ad. Meier\\\".\\n\\nOne final check.\\n`letter_title`: null\\n`sender_persons`: [\\\"Ad. Meier\\\"]\\n`send_date`: [\\\"1932-10-07\\\"]\\n`receiver_persons`: [\\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\"]\\n\\nWait, the prompt says \\\"Name(s) of the person(s) who wrote the letter.\\\"\\nIf the signature is \\\"Ad. Meier\\\", that's the person.\\nIf the signature is illegible, I might have to say \\\"Der Gesch\u00e4ftsf\u00fchrer\\\".\\nBut \\\"Ad. Meier\\\" is a plausible reading.\\nLet's look at the signature one more time. It looks like \\\"Ad. Meier\\\".\\nActually, it looks like \\\"A. Meier\\\". The loop might be just a flourish.\\nLet's assume \\\"Ad. Meier\\\".\\n\\nWait, I should check if there are other people.\\n\\\"Ihr Pr\u00e4sident\\\" is mentioned, but he is the recipient's president.\\nSo only the sender is \\\"Ad. Meier\\\".\\n\\nLet's consider the possibility that the signature is \\\"Ant. Meier\\\".\\nIn Swiss German, Anton is common.\\nBut without a cross, 'd' is more likely.\\nI will use \\\"Ad. Meier\\\".\\n\\nActually, looking at the signature very closely, it looks like \\\"Ad. Meier\\\".\\nOkay.\\n\\nOne more thing. The recipient is \\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\nThis is a group.\\nThe prompt example has \\\"Mayor Joe Quimby\\\", \\\"Seymour Skinner\\\".\\nSo a group description is fine.\\n\\nFinal plan:\\n- letter_title: null\\n- sender_persons: [\\\"Ad. Meier\\\"]\\n- send_date: [\\\"1932-10-07\\\"]\\n- receiver_persons: [\\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\"]\\n\\nWait, looking at the signature again... it looks like \\\"Ad. Meier\\\".\\nActually, could it be \\\"A. Meier\\\"?\\nLet's look at the letter 'A' in 'An' or 'Als'. It's a capital A.\\nThe signature starts with a capital A.\\nThen a lowercase 'd' loop.\\nThen 'Meier'.\\nSo \\\"Ad. Meier\\\".\\n\\nOne correction: The prompt asks for `sender_persons`.\\nIf I am not sure about the name, maybe I should include the organization?\\nNo, the key is `sender_persons`.\\nI will stick with \\\"Ad. Meier\\\".\\n\\nWait, is it possible the signature is \\\"Ant. Meier\\\"?\\nLet's look at the 't' in 'September' (line 10). It's a simple cross.\\nIn the signature, there is no cross.\\nSo 'd' is more likely.\\n\\\"Ad. Meier\\\".\\n\\nLet's verify the date. \\\"7. Oktober 1932\\\".\\nISO: 1932-10-07.\\n\\nLet's verify the receiver. \\\"An die Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\nSo \\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\n\\nLet's verify the title. No title. `null`.\\n\\nOne detail: The prompt says \\\"return them in a JSON file where the values corresponding to each key should be stored as a list, even if there is only a single value for a key\\\".\\nAnd \\\"If a piece of information is not included in the letter, set the value for the corresponding key to 'null'\\\".\\nWait, the example shows `null` for missing info? No, the example doesn't show missing info.\\nThe instruction says: \\\"If a piece of information is not included in the letter, set the value for the corresponding key to 'null'\\\".\\nBut the example shows lists.\\nSo if title is missing, should it be `[\\\"null\\\"]` or `null`?\\nThe instruction says \\\"set the value for the corresponding key to 'null'\\\".\\nUsually this means the JSON value `null`, not the string \\\"null\\\".\\nBut the example shows lists.\\n\\\"letter_title\\\": [\\\"Petition...\\\"]\\nIf it's null, should it be `null` or `[null]`?\\nThe instruction says \\\"set the value for the corresponding key to 'null'\\\".\\nThis implies the JSON value `null`.\\nHowever, the instruction also says \\\"values corresponding to each key should be stored as a list\\\".\\nThis is a contradiction if the value is null.\\nLet's look at the instruction again: \\\"return them in a JSON file where the values corresponding to each key should be stored as a list, even if there is only a single value for a key\\\".\\nThen: \\\"If a piece of information is not included in the letter, set the value for the corresponding key to 'null'\\\".\\nThis likely means the value itself is `null`, not a list containing null.\\nOr maybe it means `[\\\"null\\\"]`? No, that's a string.\\nLet's assume standard JSON `null`.\\nWait, if I look at the example:\\n`\\\"letter_title\\\": [\\\"Petition for Environmental Protection\\\"]`\\nIf there is no title, maybe `null`.\\nLet's assume `null` (the JSON literal).\\n\\nLet's re-read carefully: \\\"set the value for the corresponding key to 'null'\\\".\\nThe quotes around 'null' might imply the string \\\"null\\\" or just emphasizing the word.\\nGiven it's a JSON file, `null` is a valid value.\\nBut the first instruction says \\\"values ... should be stored as a list\\\".\\nThis is tricky.\\nIf I set it to `null`, it's not a list.\\nIf I set it to `[]`, it's an empty list.\\nIf I set it to `[\\\"null\\\"]`, it's a list with a string.\\nLet's look at the instruction \\\"set the value for the corresponding key to 'null'\\\".\\nI will interpret this as the JSON value `null`.\\nWait, if I look at similar tasks, usually if a field is missing, it's `null`.\\nBut the \\\"stored as a list\\\" constraint is strong.\\nMaybe it means if the value exists, it's a list. If not, it's `null`.\\nLet's assume `null` for the title.\\n\\nWait, is there a title?\\n\\\"BASLER PERSONENSCHIFFAHRTS-GESELLSCHAFT\\\" is the letterhead.\\n\\\"An die...\\\" is the recipient.\\nThere is no subject line like \\\"Betreff: ...\\\".\\nSo title is missing.\\n\\nLet's check the sender again.\\n\\\"Basler Personenschiffahrts-Gesellschaft\\\" is the organization.\\n\\\"Der Gesch\u00e4ftsf\u00fchrer\\\" is the role.\\nSignature \\\"Ad. Meier\\\".\\nI will use \\\"Ad. Meier\\\".\\n\\nLet's check the receiver again.\\n\\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\n\\nOne final check on the signature.\\nIt looks like \\\"Ad. Meier\\\".\\nActually, could it be \\\"A. Meier\\\"?\\nThe loop after A is quite large.\\nIt looks like a 'd'.\\nI'll go with \\\"Ad. Meier\\\".\\n\\nWait, I should check if \\\"Basler Personenschiffahrts-Gesellschaft\\\" is considered the sender person?\\nNo, it's an organization.\\nThe prompt asks for \\\"sender_persons\\\".\\nSo \\\"Ad. Meier\\\" is the best bet.\\n\\nOne detail: \\\"receiver_persons\\\".\\n\\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\" is a group.\\nI will include that string.\\n\\nLet's construct the JSON.\\n{\\n    \\\"letter_title\\\": null,\\n    \\\"sender_persons\\\": [\\\"Ad. Meier\\\"],\\n    \\\"send_date\\\": [\\\"1932-10-07\\\"],\\n    \\\"receiver_persons\\\": [\\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\"]\\n}\\n\\nWait, looking at the signature again... it looks like \\\"Ant. Meier\\\".\\nThe loop goes up, then down. A 't' usually has a cross.\\nBut sometimes in cursive, the 't' is not crossed immediately or the cross is faint.\\nOr it's an 'l'. \\\"Al. Meier\\\".\\nOr 'd'. \\\"Ad. Meier\\\".\\nGiven \\\"Adolf\\\" or \\\"Adrian\\\" are common, and 'd' has a loop like that.\\nI will stick with \\\"Ad. Meier\\\".\\n\\nActually, let's look at the letter \\\"Basler Personenschiffahrts-Gesellschaft\\\".\\nMaybe the sender is the company?\\nBut the key is `sender_persons`.\\nI will provide the name found in the signature.\\n\\nOne more thing. \\\"receiver_persons\\\".\\nThe text says \\\"An die Vorstandsmitglieder...\\\".\\nSo \\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\n\\nLet's refine the `letter_title`.\\nIs \\\"BASLER PERSONENSCHIFFAHRTS-GESELLSCHAFT\\\" the title?\\nNo, it's the letterhead.\\nIs \\\"An die Vorstandsmitglieder...\\\" the title?\\nNo, it's the recipient address.\\nSo `null`.\\n\\nFinal check on date.\\n\\\"Basel, den 7. Oktober 1932.\\\"\\n1932-10-07.\\n\\nFinal check on sender.\\n\\\"Ad. Meier\\\".\\n\\nFinal check on receiver.\\n\\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\".\\n\\nOne detail: The prompt says \\\"sender_persons: Name(s) of the person(s) who wrote the letter.\\\"\\nIf the signature is illegible, maybe I should use \\\"Der Gesch\u00e4ftsf\u00fchrer\\\"?\\nBut \\\"Ad. Meier\\\" is readable enough.\\nI will use \\\"Ad. Meier\\\".\\n\\nWait, looking at the signature again, it looks like \\\"Ad. Meier\\\".\\nActually, it looks like \\\"A. Meier\\\".\\nThe loop might be just a flourish.\\nBut \\\"Ad.\\\" is a common abbreviation.\\nI'll use \\\"Ad. Meier\\\".\\n\\nOne more check.\\n\\\"receiver_persons\\\": [\\\"Vorstandsmitglieder der Basler Personenschiffahrtsgesellschaft\\\"]\\nThis is a long string.\\nMaybe I should split it?\\n\\\"Vorstandsmitglieder\\\" (Board members)\\n\\\"Basler Personenschiffahrtsgesellschaft\\\" (Company)\\nBut it's one entity/group.\\nI'll keep it as one string.\\n\\nLet's consider if \\\"Basler Personenschiffahrts-Gesellschaft\\\" should be in `sender_persons`.\\nThe prompt asks for \\\"Name(s) of the person(s)\\\".\\nUsually, if a company writes a letter, the person signing it is the sender person.\\nSo \\\"Ad. Meier\\\".\\n\\nOkay, I'm ready.\\n\\nOne last check on the signature.\\nIt looks like \\\"Ad. Meier\\\".\\nWait, could it be \\\"Ant. Meier\\\"?\\nIf I zoom in a lot...\\nThe letter after 'A' goes up, loops, comes down.\\nThen 'Meier'.\\nIt looks like 'd'.\\nSo \\\"Ad. Meier\\\".\\n\\nWait, is it possible the signature is \\\"A. Meier\\\"?\\nThe loop is quite high.\\nBut 'd' has a loop. 'l' has a loop.\\n'd' is more likely for a name abbreviation like \\\"Ad.\\\" (Adolf/Adrian).\\n'l' would be \\\"Al.\\\" (Albert/Alfred).\\n't' would be \\\"Ant.\\\" (Anton).\\nGiven the loop shape, 'd' is most likely.\\nSo \\\"Ad. Meier\\\".\\n\\nI will formulate the JSON now.\\n\"},\"stop_reason\":null,\"token_ids\":null}],\"created\":1782135015,\"model\":\"qwen35-397b-a17b-fp8\",\"object\":\"chat.completion\",\"service_tier\":null,\"system_fingerprint\":null,\"usage\":{\"completion_tokens\":6469,\"prompt_tokens\":3225,\"total_tokens\":9694,\"completion_tokens_details\":null,\"prompt_tokens_details\":null},\"prompt_logprobs\":null,\"prompt_token_ids\":null,\"kv_transfer_params\":null}"}, "scoring": {"f1_macro": 0.57, "f1_micro": 0.52, "cost_summary": {"total_input_tokens": 192573, "total_output_tokens": 196416, "total_tokens": 388989, "input_cost_usd": 0.0, "output_cost_usd": 0.0, "total_cost_usd": 0.0}}, "normalized_score": 56.99999999999999}