Question: who played mike baxter's father on last man standing
[{'answer': 'Robert Forster', 'provenance': [{'wikipedia_id': '31775326', 'title': 'Last Man Standing (American TV series)', 'start_paragraph_id': 20, 'start_character': 12, 'end_paragraph_id': 20, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Cast and characters.:Recurring.\n'}]}]