Question: who sings lead on please let me wonder
[{'answer': 'Brian Wilson', 'provenance': [{'wikipedia_id': '4705741', 'title': 'Please Let Me Wonder', 'start_paragraph_id': 1, 'start_character': 44, 'end_paragraph_id': 1, 'end_character': 56, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4705741', 'title': 'Please Let Me Wonder', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 74, 'bleu_score': 0.59004687263928, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15787354963549694807}, 'section': 'Section::::Personnel.\n'}]}]