Question: who played bert the cop in it's a wonderful life
[{'answer': 'Ward Bond', 'provenance': [{'wikipedia_id': '60164', 'title': "It's a Wonderful Life", 'start_paragraph_id': 24, 'start_character': 12, 'end_paragraph_id': 24, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Credited.\n'}]}]