Question: the central nervous system is enclosed by membranes of meninges called the
[{'answer': 'the dura mater', 'provenance': [{'wikipedia_id': '398932', 'title': 'Meninges', 'start_paragraph_id': 1, 'start_character': 169, 'end_paragraph_id': 1, 'end_character': 183, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'the arachnoid mater', 'provenance': [{'wikipedia_id': '398932', 'title': 'Meninges', 'start_paragraph_id': 1, 'start_character': 185, 'end_paragraph_id': 1, 'end_character': 204, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'the pia mater', 'provenance': [{'wikipedia_id': '398932', 'title': 'Meninges', 'start_paragraph_id': 1, 'start_character': 210, 'end_paragraph_id': 1, 'end_character': 223, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '398932', 'title': 'Meninges', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 406, 'bleu_score': 0.752950274070398, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12510975289218864649}, 'section': 'Section::::Abstract.'}]}]