Question: who was the lead singer in dr hook
[{'answer': 'Dennis Michael Locorriere', 'provenance': [{'wikipedia_id': '2416222', 'title': 'Dennis Locorriere', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2416222', 'title': 'Dennis Locorriere', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 200, 'bleu_score': 0.613535110105056, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7601805101290044794}, 'section': 'Section::::Abstract.'}]}]