{
  "title": "Tidal generation test-window data for AI",
  "source_page": "https://fiund.com/industries/tidal-generation-test-window-data",
  "authorship": "Original fictional Fiund editorial exercise. No actual operating records or third-party source assets are included.",
  "example": {
    "title": "Match fictional research records to a renamed test window",
    "context": "Original administrative test records define half-open time windows. They provide no device design, deployment plan, site information or operating traces.",
    "records": [
      [
        "WINDOW-T1",
        "Approved practice register",
        "Window A covers 10:00 through times before 11:00. Window B covers 11:00 through times before 12:00."
      ],
      [
        "RENAME-T2",
        "Confirmed identifier correction",
        "B is renamed C for the same period. A is unchanged."
      ],
      [
        "OBS-T3",
        "Practice observation",
        "An 11:30 observation retains the former B label."
      ],
      [
        "OBS-T4",
        "Unassigned observation",
        "A second observation is at 12:10, outside the listed periods."
      ]
    ],
    "question": "Which current test-window identifier corresponds to T3, and where can T4 be assigned?",
    "answer": "T3 falls in the period now named C. T2 supplies the documented B-to-C relationship, so the retained B label can be reported with its correction. T4 lies outside both approved windows and has no supported assignment in the packet. Do not extend C's period to absorb it. The rename does not change A or any stated time boundary.",
    "failureModes": [
      "Treating a rename as a new or expanded deployment period.",
      "Assigning an outside observation to the nearest listed window."
    ],
    "fields": [
      [
        "Window boundaries",
        "Keep start inclusion and end exclusion explicit."
      ],
      [
        "Identifier lineage",
        "Preserve the documented B-to-C rename."
      ],
      [
        "Observation time",
        "Check membership independently of a copied label."
      ]
    ],
    "holdout": "Add an observation at 11:00. The supplied half-open rule places it in C, not A.",
    "boundary": "Use fictional records or permitted public research material. Keep real designs, sites, networks, raw operations and commercial negotiations outside the example."
  }
}