{
  "good": [4253, 4254, 4255, 4256, 4257, 4258, 4259, 4260, 4263, 4264, 4267, 4268, 4305, 4306, 4307, 4308, 4309, 4310, 4311],
  "needs_revision": {
    "4266": "KEY CONFLICT: 3 25/48 = 2 25/48 + A, subtract 2 25/48 from both sides yields A = 1. But stored correct_index 0 maps to '1 1/24' (25/24), not 1. None of the four answer choices equals 1. Either the question text or the answer key is wrong. Solution author flagged this with <!-- KEY CONFLICT: stored=1 1/24, computed=1 --> and computed the mathematically correct A = 1."
  }
}