Question: who played mark on one day at a time
[{'answer': 'Boyd Gaines', 'provenance': [{'wikipedia_id': '801671', 'title': 'One Day at a Time', 'start_paragraph_id': 17, 'start_character': 347, 'end_paragraph_id': 17, 'end_character': 358, 'bleu_score': 1.0, 'section': 'Section::::Production.:Casting.\n'}]}]