{
  "title": "Dimension stone block and face records for AI",
  "source_page": "https://fiund.com/industries/dimension-stone-block-face-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "A face-specific observation cannot establish an unseen interior",
    "context": "Use independently photographed molded props on a table. A painted streak is a visual feature, not a real stone defect or a structural assessment.",
    "records": [
      [
        "DF1",
        "Prop image A-front",
        "Visible label A; front face has a dark painted streak. Right face is outside the frame."
      ],
      [
        "DF2",
        "Prop image A-right",
        "Visible label A; right face is partly covered by a paper card."
      ],
      [
        "DF3",
        "Prop image B-right and dimension card",
        "Visible label B; right face has a similar streak. A separate card states prop A width 10 practice units."
      ]
    ],
    "question": "Which observations can be attributed to A, and do B's close-up or A's dimension card show that A's streak continues through the block?",
    "answer": "DF1 supports a visible painted streak on A's front face. DF2 identifies A's right view but leaves the covered area unobserved. DF3's similar streak belongs to B, and its separate dimension card states width rather than internal continuity. No supplied image shows that A's streak crosses to the right face or through the interior. Preserve that uncertainty.",
    "failureModes": [
      "Assigning B's close-up to A because the paint looks similar.",
      "Converting a supplied width into a visual observation about the prop's interior."
    ],
    "fields": [
      [
        "Prop and face identifiers",
        "Connects a view to a specific object surface."
      ],
      [
        "Visible region and occlusion",
        "Shows which part of a face was actually observed."
      ],
      [
        "Image provenance",
        "Separates neighboring props with similar appearance."
      ],
      [
        "Measurement source",
        "Keeps recorded dimensions separate from image-derived claims."
      ]
    ],
    "holdout": "Add an unobstructed right-face photograph with A's label absent but a unique tabletop marker visible. Ask whether that marker supplies the required identity link under the stated evaluation rule.",
    "boundary": "Use safe lightweight props with image rights cleared. Do not handle production blocks or record quarry work, customer specifications or private material images."
  }
}