Question: where does the optic nerve enter the eye
[{'answer': 'via the optic canal', 'provenance': [{'wikipedia_id': '152465', 'title': 'Optic nerve', 'start_paragraph_id': 6, 'start_character': 46, 'end_paragraph_id': 6, 'end_character': 65, 'bleu_score': 1.0, 'section': 'Section::::Structure.\n'}]}, {'provenance': [{'wikipedia_id': '152465', 'title': 'Optic nerve', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 1161, 'bleu_score': 0.964602814666992, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1581572044891817231}, 'section': 'Section::::Structure.\n'}]}]