Question: brazil shares a border with every south american country except
[{'answer': 'Chile', 'provenance': [{'wikipedia_id': '17259632', 'title': 'Borders of Brazil', 'start_paragraph_id': 1, 'start_character': 192, 'end_paragraph_id': 1, 'end_character': 197, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Ecuador', 'provenance': [{'wikipedia_id': '17259632', 'title': 'Borders of Brazil', 'start_paragraph_id': 1, 'start_character': 202, 'end_paragraph_id': 1, 'end_character': 209, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]