Question: who played the part of mr potts in chitty chitty bang bang
[{'answer': 'Dick Van Dyke', 'provenance': [{'wikipedia_id': '3917873', 'title': 'Chitty Chitty Bang Bang', 'start_paragraph_id': 1, 'start_character': 245, 'end_paragraph_id': 1, 'end_character': 258, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3917873', 'title': 'Chitty Chitty Bang Bang', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 1044, 'bleu_score': 0.8195212800994991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 747145817081025804}, 'section': 'Section::::Plot.\n'}]}]