Question: who plays the voodoo man in the princess and the frog
[{'answer': 'Keith David', 'provenance': [{'wikipedia_id': '6141751', 'title': 'The Princess and the Frog', 'start_paragraph_id': 1, 'start_character': 481, 'end_paragraph_id': 1, 'end_character': 492, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6141751', 'title': 'The Princess and the Frog', 'start_paragraph_id': 15, 'start_character': 31, 'end_paragraph_id': 15, 'end_character': 614, 'bleu_score': 0.8026084934430231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6031838850905839450}, 'section': 'Section::::Cast.\n'}]}]