Question: who played charles winchester the third on mash
[{'answer': 'David Ogden Stiers', 'provenance': [{'wikipedia_id': '318110', 'title': 'David Ogden Stiers', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]