Question: who plays lead guitar on i want you she's so heavy
[{'answer': 'John Lennon', 'provenance': [{'wikipedia_id': '1920672', 'title': "I Want You (She's So Heavy)", 'start_paragraph_id': 1, 'start_character': 89, 'end_paragraph_id': 1, 'end_character': 100, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'George Harrison', 'provenance': [{'wikipedia_id': '1920672', 'title': "I Want You (She's So Heavy)", 'start_paragraph_id': 6, 'start_character': 293, 'end_paragraph_id': 6, 'end_character': 308, 'bleu_score': 1.0, 'section': 'Section::::Recording.\n'}]}]