Question: the beatles were originally influenced by what style of music
[{'answer': 'skiffle', 'provenance': [{'wikipedia_id': '29812', 'title': 'The Beatles', 'start_paragraph_id': 1, 'start_character': 232, 'end_paragraph_id': 1, 'end_character': 239, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': '1950s rock and roll', 'provenance': [{'wikipedia_id': '29812', 'title': 'The Beatles', 'start_paragraph_id': 1, 'start_character': 250, 'end_paragraph_id': 1, 'end_character': 269, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '29812', 'title': 'The Beatles', 'start_paragraph_id': 108, 'start_character': 0, 'end_paragraph_id': 108, 'end_character': 476, 'bleu_score': 0.9748377259086851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6304439903336102784}, 'section': 'Section::::Musical style and development.:Genres.\n'}]}]