Question: who made the movie the wizard of oz
[{'answer': 'Metro - Goldwyn - Mayer', 'provenance': [{'wikipedia_id': '561315', 'title': 'The Wizard of Oz (1939 film)', 'start_paragraph_id': 32, 'start_character': 42, 'end_paragraph_id': 32, 'end_character': 68, 'bleu_score': 1.0, 'section': 'Section::::Production.:Filming.:Richard Thorpe as director.\n'}]}, {'provenance': [{'wikipedia_id': '561315', 'title': 'The Wizard of Oz (1939 film)', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 505, 'bleu_score': 0.63778016637408, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9976707884970867732}, 'section': 'Section::::Abstract.'}]}]