Question: who plays sam and dean's young dad
[{'answer': 'Jeffrey Dean Morgan', 'provenance': [{'wikipedia_id': '4998900', 'title': 'Jeffrey Dean Morgan', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 19, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4998900', 'title': 'Jeffrey Dean Morgan', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 499, 'bleu_score': 0.645205210167706, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15940785417841094137}, 'section': 'Section::::Abstract.'}]}]