Question: who sang here comes the sun at the concert for george
[{'answer': 'Joe Brown', 'provenance': [{'wikipedia_id': '186247', 'title': 'Concert for George', 'start_paragraph_id': 5, 'start_character': 284, 'end_paragraph_id': 5, 'end_character': 293, 'bleu_score': 1.0, 'section': 'Section::::Performances.\n'}]}]