Question: when did the brooklyn dodgers move to los angeles
[{'answer': '1957', 'provenance': [{'wikipedia_id': '25036634', 'title': 'History of the Brooklyn Dodgers', 'start_paragraph_id': 1, 'start_character': 127, 'end_paragraph_id': 1, 'end_character': 131, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25036634', 'title': 'History of the Brooklyn Dodgers', 'start_paragraph_id': 1, 'start_character': 186, 'end_paragraph_id': 1, 'end_character': 870, 'bleu_score': 0.743663643330256, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12285905807709595809}, 'section': 'Section::::Abstract.'}]}]