Question: santiago the capital of chile is in what region
[{'answer': 'Santiago Metropolitan', 'provenance': [{'wikipedia_id': '51572', 'title': 'Santiago', 'start_paragraph_id': 1, 'start_character': 248, 'end_paragraph_id': 1, 'end_character': 269, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]