{
  "task_id": "dynamics_001",
  "instruction_en": "Change only the third note in measure 1 to forte, preserving pitch and duration.",
  "instruction_zh": "只将第1小节第三个音改为强奏，并保持音高与时值。",
  "status": "generated",
  "provider": "local_rule",
  "target_scope": {
    "measures": [
      1
    ],
    "staffs": [
      1
    ],
    "event_ids": [
      "m1_rh_3"
    ]
  },
  "protected_scope": {
    "staffs": [
      2
    ]
  },
  "checks": {
    "task_success": true,
    "complete_preservation": true,
    "correct_refusal": false
  },
  "changes": [
    {
      "event_id": "m1_rh_3",
      "fields": [
        "dynamic"
      ],
      "before": {
        "dynamic": "mf"
      },
      "after": {
        "dynamic": "f"
      }
    }
  ],
  "original": "original.musicxml",
  "revision": "dynamics_001.musicxml",
  "evidence": "dynamics_001.json"
}