Question: who composed jesu joy of man's desiring
[{'answer': 'Johann Sebastian Bach', 'provenance': [{'wikipedia_id': '4283480', 'title': "Jesu, Joy of Man's Desiring", 'start_paragraph_id': 1, 'start_character': 239, 'end_paragraph_id': 1, 'end_character': 260, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '4283480', 'title': "Jesu, Joy of Man's Desiring", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 273, 'bleu_score': 0.7582065729754931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 13634330586123367151}, 'section': 'Section::::Abstract.'}]}]