Question: who was the lead singer of new birth
[{'answer': 'Leslie Wilson', 'provenance': [{'wikipedia_id': '12242759', 'title': 'New Birth (band)', 'start_paragraph_id': 9, 'start_character': 172, 'end_paragraph_id': 9, 'end_character': 185, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '12242759', 'title': 'New Birth (band)', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 149, 'bleu_score': 0.9146912192286941, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8481001975381403509}, 'section': 'Section::::History.\n'}]}]