Question: willy wonka and the chocolate factory 1971 cast charlie
[{'answer': 'Peter Ostrum', 'provenance': [{'wikipedia_id': '174560', 'title': 'Willy Wonka & the Chocolate Factory', 'start_paragraph_id': 2, 'start_character': 59, 'end_paragraph_id': 2, 'end_character': 71, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]