Question: who wrote while shepherds watched their flocks by
[{'answer': 'Nahum Tate', 'provenance': [{'wikipedia_id': '8532254', 'title': 'While shepherds watched their flocks', 'start_paragraph_id': 1, 'start_character': 183, 'end_paragraph_id': 1, 'end_character': 193, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '8532254', 'title': 'While shepherds watched their flocks', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 193, 'bleu_score': 0.9321022168949711, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5543045314291786661}, 'section': 'Section::::Abstract.'}]}]