{
  "noteId": "por-vs-para",
  "target_count": 25,
  "seed_count": 10,
  "generated_count": 15,
  "exercises": [
    {"sentence": "Caminé _____ el parque ayer.", "correct": "por", "distractor": "para", "explanation": "Movement through a place uses por."},
    {"sentence": "Este regalo es _____ ti.", "correct": "para", "distractor": "por", "explanation": "Recipient uses para."},
    {"sentence": "Estudio mucho _____ aprobar el examen.", "correct": "para", "distractor": "por", "explanation": "Purpose / in order to uses para."},
    {"sentence": "Llegué tarde _____ el tráfico.", "correct": "por", "distractor": "para", "explanation": "Reason / because of uses por."},
    {"sentence": "Trabajé _____ ocho horas.", "correct": "por", "distractor": "para", "explanation": "Duration uses por."},
    {"sentence": "Necesito el informe _____ el lunes.", "correct": "para", "distractor": "por", "explanation": "Deadline uses para."},
    {"sentence": "Pagué cien dólares _____ esta camisa.", "correct": "por", "distractor": "para", "explanation": "Exchange uses por."},
    {"sentence": "_____ mí, el español es fácil.", "correct": "Para", "distractor": "Por", "explanation": "Personal opinion uses para."},
    {"sentence": "Mi hermana trabaja _____ Google.", "correct": "para", "distractor": "por", "explanation": "Employer uses para."},
    {"sentence": "Conducimos a 100 km _____ hora.", "correct": "por", "distractor": "para", "explanation": "Per / rate uses por."},
    {"sentence": "Salimos _____ Madrid mañana.", "correct": "para", "distractor": "por", "explanation": "Destination uses para."},
    {"sentence": "Hablé con ella _____ teléfono.", "correct": "por", "distractor": "para", "explanation": "Means of communication uses por."},
    {"sentence": "No pude ir _____ ti, así que fui yo.", "correct": "por", "distractor": "para", "explanation": "In place of / on behalf of uses por."},
    {"sentence": "Estudio español _____ ser traductor.", "correct": "para", "distractor": "por", "explanation": "Goal / future purpose uses para."},
    {"sentence": "Viajamos _____ tren a Barcelona.", "correct": "por", "distractor": "para", "explanation": "Means of transport uses por."},
    {"sentence": "_____ ser tan joven, habla muy bien.", "correct": "Para", "distractor": "Por", "explanation": "Comparison / considering uses para."},
    {"sentence": "Te cambio mi sándwich _____ tu manzana.", "correct": "por", "distractor": "para", "explanation": "Exchange / swap uses por."},
    {"sentence": "La carta es _____ mi abuela.", "correct": "para", "distractor": "por", "explanation": "Recipient uses para."},
    {"sentence": "Estuvimos en París _____ una semana.", "correct": "por", "distractor": "para", "explanation": "Duration uses por."},
    {"sentence": "Necesito terminar esto _____ las cinco.", "correct": "para", "distractor": "por", "explanation": "Deadline uses para."},
    {"sentence": "Gracias _____ tu ayuda.", "correct": "por", "distractor": "para", "explanation": "Reason for gratitude uses por."},
    {"sentence": "Esta taza es _____ café.", "correct": "para", "distractor": "por", "explanation": "Purpose / intended use uses para."},
    {"sentence": "Pasamos _____ tu casa anoche.", "correct": "por", "distractor": "para", "explanation": "Movement through a place uses por."},
    {"sentence": "Estudia mucho _____ ser médico.", "correct": "para", "distractor": "por", "explanation": "Future goal uses para."},
    {"sentence": "Te llamo _____ correo electrónico.", "correct": "por", "distractor": "para", "explanation": "Means of communication uses por."}
  ]
}