Question: what did pete best play in the beatles
[{'answer': 'drummer', 'provenance': [{'wikipedia_id': '24600', 'title': 'Pete Best', 'start_paragraph_id': 1, 'start_character': 177, 'end_paragraph_id': 1, 'end_character': 184, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]