Question: the layer of the myometrium that is shed during menstruation is the
[{'answer': 'functional layer', 'provenance': [{'wikipedia_id': '9509', 'title': 'Endometrium', 'start_paragraph_id': 1, 'start_character': 131, 'end_paragraph_id': 1, 'end_character': 147, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '9509', 'title': 'Endometrium', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 500, 'bleu_score': 0.6832179674197281, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1927863256532723516}, 'section': 'Section::::Structure.\n'}]}]