Question: who sings the blue bell ice cream song
[{'answer': 'Barker', 'provenance': [{'wikipedia_id': '41944780', 'title': 'Aaron Barker', 'start_paragraph_id': 0, 'start_character': 6, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '41944780', 'title': 'Aaron Barker', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 67, 'bleu_score': 0.8242367502646051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15130917104268720284}, 'section': 'Section::::Abstract.'}]}]