Question: who's the lead singer of drowning pool
[{'answer': 'Jasen Moreno', 'provenance': [{'wikipedia_id': '420788', 'title': 'Drowning Pool', 'start_paragraph_id': 1, 'start_character': 302, 'end_paragraph_id': 1, 'end_character': 314, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '420788', 'title': 'Drowning Pool', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 314, 'bleu_score': 0.9632870032952191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7883646472809555145}, 'section': 'Section::::Abstract.'}]}]