Question: who is singing lucy in the sky with diamonds
[{'answer': 'John Lennon', 'provenance': [{'wikipedia_id': '143178', 'title': 'Lucy in the Sky with Diamonds', 'start_paragraph_id': 1, 'start_character': 170, 'end_paragraph_id': 1, 'end_character': 181, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '143178', 'title': 'Lucy in the Sky with Diamonds', 'start_paragraph_id': 26, 'start_character': 0, 'end_paragraph_id': 26, 'end_character': 61, 'bleu_score': 0.725979529115477, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17084648327124938406}, 'section': 'Section::::Personnel.\n'}]}]