Question: who played the first concert at shea stadium
[{'answer': 'the Beatles', 'provenance': [{'wikipedia_id': '28855', 'title': 'Shea Stadium', 'start_paragraph_id': 33, 'start_character': 690, 'end_paragraph_id': 33, 'end_character': 701, 'bleu_score': 1.0, 'section': 'Section::::Stadium usage.:Baseball.\n'}]}, {'provenance': [{'wikipedia_id': '28855', 'title': 'Shea Stadium', 'start_paragraph_id': 72, 'start_character': 0, 'end_paragraph_id': 72, 'end_character': 890, 'bleu_score': 0.9870543337942441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13024590446620155698}, 'section': 'Section::::Stadium usage.:Concerts.\n'}]}]