Question: who plays sax on waiting for 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': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 381, 'bleu_score': 0.9712154609069981, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5155774022599672242}, 'section': 'Section::::History.\n'}]}]