Question: when did the boston braves move to milwaukee
[{'answer': '1952', 'provenance': [{'wikipedia_id': '33540743', 'title': 'History of the Boston Braves', 'start_paragraph_id': 1, 'start_character': 168, 'end_paragraph_id': 1, 'end_character': 172, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33540743', 'title': 'History of the Boston Braves', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 576, 'bleu_score': 0.978138775770484, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8532083792063960394}, 'section': 'Section::::Abstract.'}]}]