Question: when did new york giants move to san francisco
[{'answer': '1958', 'provenance': [{'wikipedia_id': '28416', 'title': 'San Francisco Giants', 'start_paragraph_id': 1, 'start_character': 242, 'end_paragraph_id': 1, 'end_character': 246, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '28416', 'title': 'San Francisco Giants', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 356, 'bleu_score': 0.9669306597086381, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2040743094332185870}, 'section': 'Section::::Abstract.'}]}]