Question: who was considered the father of the blues
[{'answer': 'William Christopher Handy', 'provenance': [{'wikipedia_id': '58067', 'title': 'W. C. Handy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 25, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '58067', 'title': 'W. C. Handy', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 502, 'bleu_score': 0.8802420213044261, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11013371369432023116}, 'section': 'Section::::Abstract.'}]}]