Question: who played the lion in the wizzard of oz
[{'answer': 'Bert Lahr', 'provenance': [{'wikipedia_id': '561315', 'title': 'The Wizard of Oz (1939 film)', 'start_paragraph_id': 1, 'start_character': 496, 'end_paragraph_id': 1, 'end_character': 505, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]