[
  {
    "sentence": "Estos libros son _____ (mine).",
    "correct": "míos",
    "distractor": "mío",
    "explanation": "Plural masculine noun (libros) → míos.",
    "source_chapter": "32",
    "source_title": "Stressed Possessive Adjectives"
  },
  {
    "sentence": "La casa es _____ (ours).",
    "correct": "nuestra",
    "distractor": "nuestro",
    "explanation": "Casa is feminine singular → nuestra.",
    "source_chapter": "32",
    "source_title": "Stressed Possessive Adjectives"
  },
  {
    "sentence": "Una amiga _____ (of mine) llegó ayer.",
    "correct": "mía",
    "distractor": "mío",
    "explanation": "Amiga is feminine → mía.",
    "source_chapter": "32",
    "source_title": "Stressed Possessive Adjectives"
  },
  {
    "sentence": "Los problemas son _____ (theirs).",
    "correct": "suyos",
    "distractor": "suya",
    "explanation": "Problemas is masc. plural → suyos.",
    "source_chapter": "32",
    "source_title": "Stressed Possessive Adjectives"
  },
  {
    "sentence": "El coche _____ (of yours, tú) es nuevo.",
    "correct": "tuyo",
    "distractor": "tuya",
    "explanation": "Coche is masc. sing. → tuyo.",
    "source_chapter": "32",
    "source_title": "Stressed Possessive Adjectives"
  },
  {
    "sentence": "Las ideas _____ (yours, vosotros) son buenas.",
    "correct": "vuestras",
    "distractor": "vuestros",
    "explanation": "Ideas is fem. plural → vuestras.",
    "source_chapter": "32",
    "source_title": "Stressed Possessive Adjectives"
  }
]