Question: who are they singing about in american pie
[{'answer': 'Buddy Holly', 'provenance': [{'wikipedia_id': '51744', 'title': 'American Pie (song)', 'start_paragraph_id': 2, 'start_character': 134, 'end_paragraph_id': 2, 'end_character': 145, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'The Big Bopper', 'provenance': [{'wikipedia_id': '51744', 'title': 'American Pie (song)', 'start_paragraph_id': 2, 'start_character': 147, 'end_paragraph_id': 2, 'end_character': 161, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Ritchie Valens', 'provenance': [{'wikipedia_id': '51744', 'title': 'American Pie (song)', 'start_paragraph_id': 2, 'start_character': 167, 'end_paragraph_id': 2, 'end_character': 181, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '51744', 'title': 'American Pie (song)', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 604, 'bleu_score': 0.9185044905383201, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2854016900008510593}, 'section': 'Section::::Abstract.'}]}]