Question: who wrote the song train kept a rollin
[{'answer': 'Tiny Bradshaw', 'provenance': [{'wikipedia_id': '7394204', 'title': "Train Kept A-Rollin'", 'start_paragraph_id': 1, 'start_character': 127, 'end_paragraph_id': 1, 'end_character': 140, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Lois Mann a.k.a. Syd Nathan'}]