Question: which inner ear organ senses the position of the head in space
[{'answer': 'The vestibular system', 'provenance': [{'wikipedia_id': '55971', 'title': 'Inner ear', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 21, 'bleu_score': 1.0, 'section': 'Section::::Structure.:Vestibular and cochlear systems.\n'}]}, {'provenance': [{'wikipedia_id': '55971', 'title': 'Inner ear', 'start_paragraph_id': 12, 'start_character': 0, 'end_paragraph_id': 12, 'end_character': 501, 'bleu_score': 0.9766041382465441, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1672696133779984698}, 'section': 'Section::::Structure.:Vestibular and cochlear systems.\n'}]}]