Question: who sings the theme song to mary tyler moore show
[{'answer': 'Sonny Curtis', 'provenance': [{'wikipedia_id': '28376625', 'title': 'The Mary Tyler Moore Show opening sequence', 'start_paragraph_id': 1, 'start_character': 328, 'end_paragraph_id': 1, 'end_character': 340, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '28376625', 'title': 'The Mary Tyler Moore Show opening sequence', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 340, 'bleu_score': 0.9645876452711911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2377730220210690997}, 'section': 'Section::::Abstract.'}]}]