Question: who played sax on waiting on a friend
[{'answer': 'Sonny Rollins', 'provenance': [{'wikipedia_id': '6182890', 'title': 'Waiting on a Friend', 'start_paragraph_id': 7, 'start_character': 248, 'end_paragraph_id': 7, 'end_character': 261, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '6182890', 'title': 'Waiting on a Friend', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 43, 'bleu_score': 0.5081327481546141, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17598219717161935433}, 'section': 'Section::::Personnel.\n'}]}]