Question: blues music originated as a mixture of ___ and ____
[{'answer': 'ragtime', 'provenance': [{'wikipedia_id': '2681485', 'title': 'Origins of the blues', 'start_paragraph_id': 22, 'start_character': 208, 'end_paragraph_id': 22, 'end_character': 215, 'bleu_score': 1.0, 'section': 'Section::::Blues around 1900.\n'}]}, {'answer': 'the original melodic patterns of African music'}, {'provenance': [{'wikipedia_id': '2681485', 'title': 'Origins of the blues', 'start_paragraph_id': 22, 'start_character': 0, 'end_paragraph_id': 22, 'end_character': 338, 'bleu_score': 0.959574895300321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1767826654461070470}, 'section': 'Section::::Blues around 1900.\n'}]}]