Question: who plays oz in the wizard of oz
[{'answer': 'James Franco', 'provenance': [{'wikipedia_id': '32427039', 'title': 'Oz the Great and Powerful', 'start_paragraph_id': 1, 'start_character': 363, 'end_paragraph_id': 1, 'end_character': 375, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '32427039', 'title': 'Oz the Great and Powerful', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 444, 'bleu_score': 0.9109176270322311, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12894294856685387666}, 'section': 'Section::::Cast.\n'}]}]