Question: who produced 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.'}]}, {'answer': 'Barry Hankerson ( exec . )'}]