[
  {
    "sentence": "Yo usaré el teléfono _____ yo compré.",
    "correct": "que",
    "distractor": "lo que",
    "explanation": "Refers to a specific noun (teléfono), so use que.",
    "source_chapter": "45",
    "source_title": "Que & Lo que"
  },
  {
    "sentence": "_____ yo quiero es una casa.",
    "correct": "Lo que",
    "distractor": "Que",
    "explanation": "Refers to an abstract idea ('what I want'), so use lo que.",
    "source_chapter": "45",
    "source_title": "Que & Lo que"
  },
  {
    "sentence": "Tú no sabes _____ tú quieres.",
    "correct": "lo que",
    "distractor": "que",
    "explanation": "'What you want' is unspecified — lo que.",
    "source_chapter": "45",
    "source_title": "Que & Lo que"
  },
  {
    "sentence": "La casa _____ tú ves es grande.",
    "correct": "que",
    "distractor": "lo que",
    "explanation": "Modifying a specific noun (casa).",
    "source_chapter": "45",
    "source_title": "Que & Lo que"
  },
  {
    "sentence": "Yo veo _____ ese hombre está caminando.",
    "correct": "que",
    "distractor": "lo que",
    "explanation": "Conjunction joining clauses ('I see that…').",
    "source_chapter": "45",
    "source_title": "Que & Lo que"
  },
  {
    "sentence": "_____ ellos necesitan es algo para comer.",
    "correct": "Lo que",
    "distractor": "Que",
    "explanation": "Abstract subject of the sentence.",
    "source_chapter": "45",
    "source_title": "Que & Lo que"
  },
  {
    "sentence": "Yo no vi _____ tú me diste.",
    "correct": "lo que",
    "distractor": "que",
    "explanation": "Unspecified thing — lo que.",
    "source_chapter": "45",
    "source_title": "Que & Lo que"
  },
  {
    "sentence": "Yo he tomado la medicina _____ el doctor me dio.",
    "correct": "que",
    "distractor": "lo que",
    "explanation": "Modifies medicina, a specific noun.",
    "source_chapter": "45",
    "source_title": "Que & Lo que"
  }
]