{
  "noteId": "relative-pronouns",
  "target_count": 30,
  "seed_count": 8,
  "generated_count": 22,
  "exercises": [
    {"sentence": "Yo usaré el teléfono _____ yo compré.", "correct": "que", "distractor": "lo que", "explanation": "Refers to a specific noun (teléfono), so use 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."},
    {"sentence": "Tú no sabes _____ tú quieres.", "correct": "lo que", "distractor": "que", "explanation": "'What you want' is unspecified — lo que."},
    {"sentence": "La casa _____ tú ves es grande.", "correct": "que", "distractor": "lo que", "explanation": "Modifying a specific noun (casa)."},
    {"sentence": "Yo veo _____ ese hombre está caminando.", "correct": "que", "distractor": "lo que", "explanation": "Conjunction joining clauses ('I see that…')."},
    {"sentence": "_____ ellos necesitan es algo para comer.", "correct": "Lo que", "distractor": "Que", "explanation": "Abstract subject of the sentence."},
    {"sentence": "Yo no vi _____ tú me diste.", "correct": "lo que", "distractor": "que", "explanation": "Unspecified thing — lo que."},
    {"sentence": "Yo he tomado la medicina _____ el doctor me dio.", "correct": "que", "distractor": "lo que", "explanation": "Modifies medicina, a specific noun."},
    {"sentence": "El chico con _____ hablo es mi primo.", "correct": "quien", "distractor": "que", "explanation": "After a preposition with a person, use quien."},
    {"sentence": "La mujer _____ vive aquí es doctora.", "correct": "que", "distractor": "quien", "explanation": "In a defining clause, que works for people too."},
    {"sentence": "Ese es el señor a _____ le di el dinero.", "correct": "quien", "distractor": "que", "explanation": "Person after preposition a → quien."},
    {"sentence": "Mis amigos, _____ viven en Lima, vienen mañana.", "correct": "quienes", "distractor": "que", "explanation": "Non-defining clause about people uses quienes."},
    {"sentence": "El libro _____ portada es roja es mío.", "correct": "cuya", "distractor": "que", "explanation": "Possession ('whose cover') uses cuyo/a, agreeing with portada."},
    {"sentence": "El profesor _____ clases tomamos es famoso.", "correct": "cuyas", "distractor": "que", "explanation": "Cuyas agrees with clases (fem. plural)."},
    {"sentence": "Ese es el hombre _____ hijo es médico.", "correct": "cuyo", "distractor": "que", "explanation": "Cuyo agrees with hijo (masc. singular)."},
    {"sentence": "_____ me molesta es su actitud.", "correct": "Lo que", "distractor": "Quien", "explanation": "Abstract subject ('what bothers me') uses lo que."},
    {"sentence": "La razón por _____ vine es importante.", "correct": "la que", "distractor": "que", "explanation": "After preposition + feminine noun, use la que."},
    {"sentence": "Los chicos con _____ jugué son simpáticos.", "correct": "los que", "distractor": "que", "explanation": "After preposition + masc. plural antecedent, use los que."},
    {"sentence": "Las casas en _____ vivimos son nuevas.", "correct": "las que", "distractor": "que", "explanation": "After preposition + fem. plural antecedent, use las que."},
    {"sentence": "El edificio en _____ trabajo es alto.", "correct": "el que", "distractor": "que", "explanation": "Preposition en + masc. sing. antecedent → el que."},
    {"sentence": "Ella es la persona _____ me ayudó.", "correct": "que", "distractor": "quien", "explanation": "Defining clause subject prefers que, even for people."},
    {"sentence": "No entiendo _____ dices.", "correct": "lo que", "distractor": "que", "explanation": "Unspecified content ('what you say') uses lo que."},
    {"sentence": "El estudiante _____ ganó el premio es Pablo.", "correct": "que", "distractor": "quien", "explanation": "Defining clause: que works for people."},
    {"sentence": "La señora _____ hijos estudian aquí es amable.", "correct": "cuyos", "distractor": "que", "explanation": "Cuyos agrees with hijos (masc. plural)."},
    {"sentence": "Eso es _____ pasó ayer.", "correct": "lo que", "distractor": "que", "explanation": "Refers to an event/idea, not a noun."},
    {"sentence": "Las personas a _____ invité llegaron tarde.", "correct": "quienes", "distractor": "que", "explanation": "Personal a + people → quienes."},
    {"sentence": "El coche _____ está afuera es mío.", "correct": "que", "distractor": "quien", "explanation": "Things always use que, never quien."},
    {"sentence": "Recuerdo todo _____ me dijiste.", "correct": "lo que", "distractor": "que", "explanation": "Todo + relative refers to abstract whole — lo que."},
    {"sentence": "Mi hermana, _____ vive en México, me visita.", "correct": "quien", "distractor": "que", "explanation": "Non-defining clause about a person prefers quien."},
    {"sentence": "El país _____ visité fue Perú.", "correct": "que", "distractor": "lo que", "explanation": "Modifies a specific noun (país) — use que."}
  ]
}