Question: who played young dumbledore in chamber of secrets
[{'answer': 'Toby Regbo', 'provenance': [{'wikipedia_id': '45322', 'title': 'Albus Dumbledore', 'start_paragraph_id': 37, 'start_character': 0, 'end_paragraph_id': 37, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Portrayals within films.\n'}]}]