Question: when did the rolling stones first come to america
[{'answer': '1964', 'provenance': [{'wikipedia_id': '17687741', 'title': 'The Rolling Stones 1st American Tour 1964', 'start_paragraph_id': 0, 'start_character': 37, 'end_paragraph_id': 0, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '17687741', 'title': 'The Rolling Stones 1st American Tour 1964', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 534, 'bleu_score': 0.9806740509884301, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3764505538403325959}, 'section': 'Section::::Abstract.'}]}]