Question: who wrote ain't no sunshine when you're gone
[{'answer': 'Bill Withers', 'provenance': [{'wikipedia_id': '1489092', 'title': "Ain't No Sunshine", 'start_paragraph_id': 1, 'start_character': 33, 'end_paragraph_id': 1, 'end_character': 45, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]