Question: how long do you have to live in brazil to become a citizen
[{'answer': 'four years', 'provenance': [{'wikipedia_id': '6709070', 'title': 'Brazilian nationality law', 'start_paragraph_id': 11, 'start_character': 12, 'end_paragraph_id': 11, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Naturalization as a Brazilian citizen.\n'}]}]