Question: who sings the theme song for family ties
[{'answer': 'Jeff Barry and Tom Scott', 'provenance': [{'wikipedia_id': '172943', 'title': 'Family Ties', 'start_paragraph_id': 34, 'start_character': 79, 'end_paragraph_id': 34, 'end_character': 103, 'bleu_score': 1.0, 'section': 'Section::::Production.:Theme song.\n'}]}, {'provenance': [{'wikipedia_id': '172943', 'title': 'Family Ties', 'start_paragraph_id': 34, 'start_character': 0, 'end_paragraph_id': 34, 'end_character': 295, 'bleu_score': 0.900226220166319, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17327168786396275717}, 'section': 'Section::::Production.:Theme song.\n'}]}]