Question: which country has the largest land area in south america
[{'answer': 'Brazil', 'provenance': [{'wikipedia_id': '26769', 'title': 'South America', 'start_paragraph_id': 1, 'start_character': 497, 'end_paragraph_id': 1, 'end_character': 503, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26769', 'title': 'South America', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 243, 'bleu_score': 0.948006874591591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11090242310612945044}, 'section': 'Section::::Geography.\n'}]}]