Question: who played the marshal in who shot liberty valance
[{'answer': 'Andy Devine', 'provenance': [{'wikipedia_id': '434089', 'title': 'The Man Who Shot Liberty Valance', 'start_paragraph_id': 1, 'start_character': 380, 'end_paragraph_id': 1, 'end_character': 391, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '434089', 'title': 'The Man Who Shot Liberty Valance', 'start_paragraph_id': 25, 'start_character': 0, 'end_paragraph_id': 25, 'end_character': 49, 'bleu_score': 0.6803749333171201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5380187580909532717}, 'section': 'Section::::Cast.\n'}]}]