Question: who voiced tiana in the princess and the frog
[{'answer': 'Anika Noni Rose', 'provenance': [{'wikipedia_id': '6141751', 'title': 'The Princess and the Frog', 'start_paragraph_id': 1, 'start_character': 450, 'end_paragraph_id': 1, 'end_character': 465, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]