Question: who sang yakety yak don't talk back
[{'answer': 'The Coasters', 'provenance': [{'wikipedia_id': '7847422', 'title': 'Yakety Yak', 'start_paragraph_id': 1, 'start_character': 92, 'end_paragraph_id': 1, 'end_character': 104, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '7847422', 'title': 'Yakety Yak', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 412, 'bleu_score': 0.9430699958503841, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15721733019223593825}, 'section': 'Section::::Abstract.'}]}]