{
  "answer": {
    "aa": [
      "DL21",
      "BR25",
      "BR99"
    ],
    "bb": 480,
    "cc": 7,
    "dd": {
      "edge": 150,
      "north": 70,
      "south": 260
    }
  },
  "evidence": [
    2,
    49,
    97,
    150,
    187,
    236,
    254,
    296
  ],
  "schema_version": 1,
  "task": "program-execution-tracing"
}