Question: who is the lead singer of the band shinedown
[{'answer': 'Brent Stephen Smith', 'provenance': [{'wikipedia_id': '13164896', 'title': 'Brent Smith', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '13164896', 'title': 'Brent Smith', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 146, 'bleu_score': 0.9181891462193901, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2561285466647352717}, 'section': 'Section::::Abstract.'}]}]