Question: who plays dr k on this is us
[{'answer': 'Gerald McRaney', 'provenance': [{'wikipedia_id': '52995471', 'title': 'List of This Is Us characters', 'start_paragraph_id': 88, 'start_character': 12, 'end_paragraph_id': 88, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Recurring characters.:Introduced in season one.\n'}]}, {'provenance': [{'wikipedia_id': '52995471', 'title': 'List of This Is Us characters', 'start_paragraph_id': 88, 'start_character': 0, 'end_paragraph_id': 88, 'end_character': 110, 'bleu_score': 0.782878563712303, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4946071725360524985}, 'section': 'Section::::Recurring characters.:Introduced in season one.\n'}]}]