Question: who sings lead vocal on god only knows
[{'answer': 'Carl Wilson', 'provenance': [{'wikipedia_id': '1124684', 'title': 'God Only Knows', 'start_paragraph_id': 3, 'start_character': 32, 'end_paragraph_id': 3, 'end_character': 43, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1124684', 'title': 'God Only Knows', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 473, 'bleu_score': 0.5638012350729, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12393779769302387491}, 'section': 'Section::::Abstract.'}]}]