Question: who sang the heart of rock and roll
[{'answer': 'Huey Lewis and the News', 'provenance': [{'wikipedia_id': '22060525', 'title': 'The Heart of Rock & Roll', 'start_paragraph_id': 1, 'start_character': 50, 'end_paragraph_id': 1, 'end_character': 73, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]