Question: which person or group brought polyphonic music into the christian church
[{'answer': 'Guillaume de Machaut', 'provenance': [{'wikipedia_id': '24144', 'title': 'Polyphony', 'start_paragraph_id': 14, 'start_character': 81, 'end_paragraph_id': 14, 'end_character': 101, 'bleu_score': 1.0, 'section': 'Section::::European polyphony.:Western Europe and Roman Catholicism.\n'}]}, {'provenance': [{'wikipedia_id': '24144', 'title': 'Polyphony', 'start_paragraph_id': 14, 'start_character': 0, 'end_paragraph_id': 14, 'end_character': 179, 'bleu_score': 0.9364250605898111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13447185271872112033}, 'section': 'Section::::European polyphony.:Western Europe and Roman Catholicism.\n'}]}]