Question: who were the three singers who died in a plane crash
[{'answer': 'Buddy Holly', 'provenance': [{'wikipedia_id': '58796', 'title': 'The Day the Music Died', 'start_paragraph_id': 1, 'start_character': 54, 'end_paragraph_id': 1, 'end_character': 65, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Ritchie Valens', 'provenance': [{'wikipedia_id': '58796', 'title': 'The Day the Music Died', 'start_paragraph_id': 1, 'start_character': 67, 'end_paragraph_id': 1, 'end_character': 81, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': "J.P. `` The Big Bopper '' Richardson"}, {'provenance': [{'wikipedia_id': '58796', 'title': 'The Day the Music Died', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 355, 'bleu_score': 0.8767268292043211, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14698335949470337497}, 'section': 'Section::::Abstract.'}]}]