Question: who wrote the chorale text and tune for wachet auf (sleepers awake)
[{'answer': 'Johann Sebastian Bach', 'provenance': [{'wikipedia_id': '1661351', 'title': 'Wachet auf, ruft uns die Stimme, BWV 140', 'start_paragraph_id': 41, 'start_character': 63, 'end_paragraph_id': 41, 'end_character': 84, 'bleu_score': 1.0, 'section': 'Section::::External links.\n'}]}]