Question: who wrote you've lost that lovin' feelin'
[{'answer': 'Phil Spector', 'provenance': [{'wikipedia_id': '2500059', 'title': "You've Lost That Lovin' Feelin'", 'start_paragraph_id': 1, 'start_character': 55, 'end_paragraph_id': 1, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Barry Mann', 'provenance': [{'wikipedia_id': '2500059', 'title': "You've Lost That Lovin' Feelin'", 'start_paragraph_id': 1, 'start_character': 69, 'end_paragraph_id': 1, 'end_character': 79, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Cynthia Weil', 'provenance': [{'wikipedia_id': '2500059', 'title': "You've Lost That Lovin' Feelin'", 'start_paragraph_id': 1, 'start_character': 85, 'end_paragraph_id': 1, 'end_character': 97, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]