Question: is any of the cast of wizard of oz still alive
[{'answer': 'Gerard Marenghi', 'provenance': [{'wikipedia_id': '2784937', 'title': 'Jerry Maren', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 15, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]