{
  "n_digits": 6,
  "ops": "add",
  "train_size": 500000,
  "val_size": 10000,
  "enrichment": "sum-to-9 (addition) + equal-digit borrow (subtraction) + 1% equal operands",
  "columns": [
    "tokens",
    "labels",
    "op",
    "complexity",
    "cascade_depth",
    "x_digits",
    "y_digits",
    "z_digits",
    "sa",
    "st",
    "sv"
  ]
}