Question: who discovered some islands in the bahamas in 1492
[{'answer': 'Christopher Columbus', 'provenance': [{'wikipedia_id': '39892', 'title': 'History of the Bahamas', 'start_paragraph_id': 2, 'start_character': 48, 'end_paragraph_id': 2, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '39892', 'title': 'History of the Bahamas', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 492, 'bleu_score': 0.9170058134077721, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 18201446381908740134}, 'section': 'Section::::Abstract.'}]}]