{
  "frozen_on": "2026-10-25",
  "seed": 20261025,
  "method": "stratified by tier; per tier: test = round(20%), dev = round(10%), rest train; ids sorted then shuffled with random.Random(seed)",
  "counts": {
    "train": 82,
    "dev": 11,
    "test": 20
  },
  "per_tier": {
    "1": {
      "train": 22,
      "dev": 3,
      "test": 6
    },
    "2": {
      "train": 32,
      "dev": 5,
      "test": 9
    },
    "3": {
      "train": 18,
      "dev": 3,
      "test": 5
    }
  },
  "train": [
    "T003",
    "T004",
    "T005",
    "T006",
    "T007",
    "T008",
    "T010",
    "T011",
    "T013",
    "T015",
    "T016",
    "T017",
    "T018",
    "T019",
    "T020",
    "T021",
    "T022",
    "T023",
    "T024",
    "T025",
    "T027",
    "T029",
    "T030",
    "T031",
    "T032",
    "T034",
    "T035",
    "T036",
    "T037",
    "T038",
    "T040",
    "T041",
    "T044",
    "T045",
    "T046",
    "T047",
    "T048",
    "T049",
    "T050",
    "T052",
    "T053",
    "T054",
    "T056",
    "T057",
    "T059",
    "T063",
    "T066",
    "T068",
    "T069",
    "T070",
    "T071",
    "T072",
    "T075",
    "T076",
    "T078",
    "T079",
    "T080",
    "T083",
    "T085",
    "T086",
    "T087",
    "T088",
    "T089",
    "T091",
    "T092",
    "T093",
    "T094",
    "T096",
    "T100",
    "T101",
    "T102",
    "T103",
    "T104",
    "T105",
    "T106",
    "T107",
    "T108",
    "T109",
    "T110",
    "T111",
    "T112",
    "T113"
  ],
  "dev": [
    "T028",
    "T033",
    "T042",
    "T055",
    "T062",
    "T064",
    "T067",
    "T073",
    "T074",
    "T081",
    "T098"
  ],
  "test": [
    "T001",
    "T002",
    "T009",
    "T012",
    "T014",
    "T026",
    "T039",
    "T043",
    "T051",
    "T058",
    "T060",
    "T061",
    "T065",
    "T077",
    "T082",
    "T084",
    "T090",
    "T095",
    "T097",
    "T099"
  ],
  "revisions": [
    {
      "on": "2026-10-26",
      "added_to_train": [
        "T104",
        "T105",
        "T106",
        "T107",
        "T108",
        "T109",
        "T110",
        "T111",
        "T112",
        "T113"
      ],
      "note": "new tasks appended to train only; dev and test unchanged"
    }
  ]
}