Question: who plays sheldon's father on young sheldon
[{'answer': 'Lance Barber', 'provenance': [{'wikipedia_id': '53475669', 'title': 'Young Sheldon', 'start_paragraph_id': 1, 'start_character': 376, 'end_paragraph_id': 1, 'end_character': 388, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]