Question: who sang this town ain't big enough
[{'answer': 'Sparks', 'provenance': [{'wikipedia_id': '4771239', 'title': "This Town Ain't Big Enough for Both of Us", 'start_paragraph_id': 1, 'start_character': 100, 'end_paragraph_id': 1, 'end_character': 106, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]