Question: when was o sacred head now wounded written
[{'answer': 'during the Middle Ages', 'provenance': [{'wikipedia_id': '6708642', 'title': 'O Sacred Head, Now Wounded', 'start_paragraph_id': 1, 'start_character': 87, 'end_paragraph_id': 1, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6708642', 'title': 'O Sacred Head, Now Wounded', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 208, 'bleu_score': 0.948006874591591, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3437686801531597108}, 'section': 'Section::::Abstract.'}]}]