Question: who sang if i ain't got you
[{'answer': 'Alicia Keys', 'provenance': [{'wikipedia_id': '3285556', 'title': "If I Ain't Got You", 'start_paragraph_id': 1, 'start_character': 61, 'end_paragraph_id': 1, 'end_character': 72, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3285556', 'title': "If I Ain't Got You", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 326, 'bleu_score': 0.6213988517643301, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 901201302777988616}, 'section': 'Section::::Abstract.'}]}]