Question: who sang things aint what they used to be
[{'answer': 'Max Bygraves', 'provenance': [{'wikipedia_id': '2661916', 'title': "Fings Ain't Wot They Used T'Be", 'start_paragraph_id': 5, 'start_character': 254, 'end_paragraph_id': 5, 'end_character': 266, 'bleu_score': 1.0, 'section': 'Section::::Production background.\n'}]}, {'provenance': [{'wikipedia_id': '2661916', 'title': "Fings Ain't Wot They Used T'Be", 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 406, 'bleu_score': 0.9338603241255111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2513074706010476367}, 'section': 'Section::::Production background.\n'}]}]