Question: who is the lead singer of the j geils band
[{'answer': 'Peter Wolf', 'provenance': [{'wikipedia_id': '909499', 'title': 'The J. Geils Band', 'start_paragraph_id': 1, 'start_character': 184, 'end_paragraph_id': 1, 'end_character': 194, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]