Question: who played young tom riddle in harry potter
[{'answer': 'Hero Beauregard Fiennes Tiffin'}, {'provenance': [{'wikipedia_id': '18657642', 'title': 'Hero Fiennes-Tiffin', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 357, 'bleu_score': 0.601654633890604, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11552015719997925085}, 'section': 'Section::::Abstract.'}]}]