Question: polar express how many characters did tom hanks play
[{'answer': 'six', 'provenance': [{'wikipedia_id': '3701905', 'title': 'The Polar Express (film)', 'start_paragraph_id': 1, 'start_character': 723, 'end_paragraph_id': 1, 'end_character': 726, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3701905', 'title': 'The Polar Express (film)', 'start_paragraph_id': 1, 'start_character': 640, 'end_paragraph_id': 1, 'end_character': 926, 'bleu_score': 0.5288653650903601, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5110743594483042609}, 'section': 'Section::::Abstract.'}]}]