{
  "title": "Steel wire drawing data for AI pass and specimen records",
  "source_page": "https://fiund.com/industries/drawn-wire-pass-sample-basis-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "Do not use a middle-pass reading as final",
    "context": "An original pass diagram tracks arbitrary readings at staged points. No settings or wire specification appear.",
    "records": [
      [
        "1",
        "Traveler",
        "Mock lot W3 goes through passes 1, 2 and 3; pass 3 is final."
      ],
      [
        "2",
        "Lab index",
        "Report X: W3 pass 2 after-step measurement; report Y: W3 pass 3 before-step measurement."
      ],
      [
        "3",
        "Request",
        "Find the after-step value from the final pass."
      ]
    ],
    "question": "Which report satisfies the requested stage and timing?",
    "answer": "Neither. X in record 2 has the requested after-step timing but is pass 2, while Y names final pass 3 but precedes that step. Records 1 and 3 require both keys together, so the final after-step measurement is missing.",
    "failureModes": [
      "Treating any pass 3 record as final output evidence",
      "Equating after pass 2 and after pass 3"
    ],
    "fields": [
      [
        "pass_number",
        "Identifies the manufacturing stage"
      ],
      [
        "within_step_timing",
        "Distinguishes before and after"
      ],
      [
        "requested_observation",
        "Makes the joint filter explicit"
      ]
    ],
    "holdout": "Log a pass 3 after-step observation for another lot; require lot match as well as stage and timing.",
    "boundary": "No actual wire-drawing methods, operating data, material specifications or fitness claims."
  }
}