Question: who plays the voodoo guy in 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.'}]}]