Question: who played organ on she's so heavy
[{'answer': 'Billy Preston', 'provenance': [{'wikipedia_id': '1920672', 'title': "I Want You (She's So Heavy)", 'start_paragraph_id': 7, 'start_character': 77, 'end_paragraph_id': 7, 'end_character': 90, 'bleu_score': 1.0, 'section': 'Section::::Recording.\n'}]}, {'provenance': [{'wikipedia_id': '1920672', 'title': "I Want You (She's So Heavy)", 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 41, 'bleu_score': 0.5081327481546141, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11248395823871299308}, 'section': 'Section::::Personnel.\n'}]}]