{
  "cell_id": "q124_hard_negative_k2",
  "doc_id": "DSA-278777.pdf",
  "question": "How many parts has the prefix N in the packages?",
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  "answer_format": "Int",
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  "source_position": "first",
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  "est_tokens": 63000,
  "expected_route": "openrouter",
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  "original_filenames": [
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}