Question: who sang the theme tune to the likely lads
[{'answer': 'Tony Rivers', 'provenance': [{'wikipedia_id': '89306', 'title': 'Whatever Happened to the Likely Lads?', 'start_paragraph_id': 15, 'start_character': 174, 'end_paragraph_id': 15, 'end_character': 185, 'bleu_score': 1.0, 'section': 'Section::::The series.\n'}]}, {'provenance': [{'wikipedia_id': '89306', 'title': 'Whatever Happened to the Likely Lads?', 'start_paragraph_id': 15, 'start_character': 0, 'end_paragraph_id': 15, 'end_character': 556, 'bleu_score': 0.955468993395951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2666976404678302208}, 'section': 'Section::::The series.\n'}]}]