Question: who played colonel blake in the movie mash
[{'answer': 'Roger Bowen', 'provenance': [{'wikipedia_id': '23784006', 'title': 'MASH (film)', 'start_paragraph_id': 2, 'start_character': 251, 'end_paragraph_id': 2, 'end_character': 262, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23784006', 'title': 'MASH (film)', 'start_paragraph_id': 17, 'start_character': 0, 'end_paragraph_id': 17, 'end_character': 56, 'bleu_score': 0.7598356856515921, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17041323068596102553}, 'section': 'Section::::Cast.\n'}]}]