Question: who wrote the moon is a harsh mistress
[{'answer': 'Jimmy Webb', 'provenance': [{'wikipedia_id': '34323439', 'title': 'The Moon Is a Harsh Mistress (song)', 'start_paragraph_id': 1, 'start_character': 116, 'end_paragraph_id': 1, 'end_character': 126, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '34323439', 'title': 'The Moon Is a Harsh Mistress (song)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 507, 'bleu_score': 0.9587895747539651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9769916046955101706}, 'section': 'Section::::Abstract.'}]}]