Question: which part of the pharynx lies behind the nasal cavity
[{'answer': 'nasopharynx', 'provenance': [{'wikipedia_id': '21581881', 'title': 'Pharynx', 'start_paragraph_id': 2, 'start_character': 353, 'end_paragraph_id': 2, 'end_character': 364, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '21581881', 'title': 'Pharynx', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 470, 'bleu_score': 0.97451705556073, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9774250637927263789}, 'section': 'Section::::Structure.:Nasopharynx.\n'}]}]