{
  "mission_id": "mission_68_vieux_moulin",
  "title": "Le vieux moulin",
  "narrative_context": "Le meunier a mal conjugué un verbe sur sa porte. Trouve-le et corrige-le.",
  "rule_id": "regle_imparfait",
  "exercise_type": "sentence_correction",
  "map_position": {
    "x": 0.5,
    "y": 0.15
  },
  "review_status": "draft"
}