{
  "synthetic": true,
  "function": "combination",
  "scope": "Finite offline teaching cases only; no live account/platform access.",
  "cases": [
    {
      "id": 1,
      "args": [
        "S",
        "blue",
        [
          [
            "S",
            "blue",
            "V1"
          ],
          [
            "M",
            "red",
            "V2"
          ]
        ]
      ],
      "expected": "V1"
    },
    {
      "id": 2,
      "args": [
        "L",
        "blue",
        [
          [
            "S",
            "blue",
            "V1"
          ]
        ]
      ],
      "expected": "missing"
    },
    {
      "id": 3,
      "args": [
        "S",
        "blue",
        [
          [
            "S",
            "blue",
            "V1"
          ],
          [
            "S",
            "blue",
            "V2"
          ]
        ]
      ],
      "expected": "ambiguous"
    }
  ]
}