{
  "chapter_id": "16",
  "slug": "prepositional-pronouns",
  "title": "Prepositional Pronouns",
  "time_range_sec": [3634, 3806],
  "summary": "Prepositional pronouns follow prepositions; only yo and tú change (to mí and ti), and con combines into conmigo and contigo.",
  "suggested_grammar_note_id": null,
  "rules": [
    {
      "title": "Forms",
      "bullets": [
        "yo → mí (with accent), tú → ti (no accent).",
        "All other pronouns (él, ella, nosotros/as, vosotros/as, ellos/as) keep their subject form.",
        "Used after prepositions like de, en, a, para, por, sobre, sin, hacia."
      ]
    },
    {
      "title": "Special forms with con",
      "bullets": [
        "con + mí → conmigo.",
        "con + ti → contigo.",
        "All other pronouns stay normal: con él, con nosotros, con ellos, etc."
      ]
    },
    {
      "title": "Exceptions",
      "bullets": [
        "After entre, según, excepto, menos, incluso, salvo, use yo and tú (not mí/ti).",
        "de él (from him) is not contracted to del; only the article el contracts."
      ]
    }
  ],
  "examples": [
    {"es": "Esto es para mí.", "en": "This is for me.", "tags": ["mí"]},
    {"es": "Esto es para nosotros.", "en": "This is for us.", "tags": ["nosotros"]},
    {"es": "La vida es fácil para ella.", "en": "Life is easy for her.", "tags": ["ella"]},
    {"es": "Tú puedes ir con nosotros.", "en": "You can go with us.", "tags": ["con"]},
    {"es": "Este regalo es de él.", "en": "This gift is from him.", "tags": ["de él"]},
    {"es": "Ellos van con ellos.", "en": "They go with them.", "tags": ["con", "ellos"]},
    {"es": "¿Quieres ir conmigo?", "en": "Do you want to go with me?", "tags": ["conmigo"]},
    {"es": "Sí, quiero ir contigo.", "en": "Yes, I want to go with you.", "tags": ["contigo"]},
    {"es": "Entre tú y yo, no hay secretos.", "en": "Between you and me, there are no secrets.", "tags": ["exception", "entre"]},
    {"es": "Según tú, esto es fácil.", "en": "According to you, this is easy.", "tags": ["exception", "según"]}
  ],
  "vocab": [
    {"es": "mí", "en": "me (after preposition)", "pos": "phrase"},
    {"es": "ti", "en": "you (after preposition)", "pos": "phrase"},
    {"es": "conmigo", "en": "with me", "pos": "phrase"},
    {"es": "contigo", "en": "with you", "pos": "phrase"},
    {"es": "para", "en": "for", "pos": "phrase"},
    {"es": "con", "en": "with", "pos": "phrase"}
  ],
  "conjugation_tables": [],
  "exercises": [
    {"sentence": "Este regalo es para _____.", "correct": "mí", "distractor": "yo", "explanation": "After preposition 'para', use mí, not yo."},
    {"sentence": "¿Quieres ir _____?", "correct": "conmigo", "distractor": "con mí", "explanation": "con + mí combines into conmigo."},
    {"sentence": "Sí, voy _____.", "correct": "contigo", "distractor": "con ti", "explanation": "con + ti combines into contigo."},
    {"sentence": "El libro es de _____.", "correct": "él", "distractor": "lo", "explanation": "After de, use the prepositional pronoun él (with accent)."},
    {"sentence": "Esto es para _____.", "correct": "nosotros", "distractor": "nos", "explanation": "After 'para', use the prepositional pronoun nosotros."},
    {"sentence": "Entre tú y _____, no hay problema.", "correct": "yo", "distractor": "mí", "explanation": "After 'entre', Spanish uses subject pronouns yo and tú."},
    {"sentence": "Ella va _____.", "correct": "con ellos", "distractor": "conellos", "explanation": "Only mí and ti combine with con; con ellos stays separate."}
  ],
  "caveats": "Source clean text contained heavy OCR errors ('AOS', 'noos', 'kigo'); reconstructed from Spanish grammar."
}