Question: who sang the theme song for wonder years
[{'answer': 'Joe Cocker', 'provenance': [{'wikipedia_id': '143491', 'title': 'With a Little Help from My Friends', 'start_paragraph_id': 2, 'start_character': 39, 'end_paragraph_id': 2, 'end_character': 49, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]