Question: who wrote age aint nothing but a number
[{'answer': 'R. Kelly', 'provenance': [{'wikipedia_id': '2314172', 'title': "Age Ain't Nothing but a Number", 'start_paragraph_id': 1, 'start_character': 280, 'end_paragraph_id': 1, 'end_character': 288, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2314172', 'title': "Age Ain't Nothing but a Number", 'start_paragraph_id': 36, 'start_character': 0, 'end_paragraph_id': 36, 'end_character': 178, 'bleu_score': 0.9364250605898111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3848229117959836011}, 'section': 'Section::::Track listing.\n'}]}]