Question: who played david on one day at a time
[{'answer': 'Richard Masur', 'provenance': [{'wikipedia_id': '801671', 'title': 'One Day at a Time', 'start_paragraph_id': 5, 'start_character': 349, 'end_paragraph_id': 5, 'end_character': 362, 'bleu_score': 1.0, 'section': 'Section::::Plot.\n'}]}, {'provenance': [{'wikipedia_id': '801671', 'title': 'One Day at a Time', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 622, 'bleu_score': 0.980097014099621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 682832006735854988}, 'section': 'Section::::Plot.\n'}]}]