Question: who is the griot that sings the epic
[{'answer': 'Balla Fasséké', 'provenance': [{'wikipedia_id': '475671', 'title': 'Griot', 'start_paragraph_id': 10, 'start_character': 357, 'end_paragraph_id': 10, 'end_character': 370, 'bleu_score': 1.0, 'section': 'Section::::In the Mali Empire.\n'}]}, {'provenance': [{'wikipedia_id': '475671', 'title': 'Griot', 'start_paragraph_id': 10, 'start_character': 0, 'end_paragraph_id': 10, 'end_character': 493, 'bleu_score': 0.9768747032089851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1529692567735158494}, 'section': 'Section::::In the Mali Empire.\n'}]}]