Question: where does the optic nerve attached to the eye
[{'answer': 'the optic head', 'provenance': [{'wikipedia_id': '152465', 'title': 'Optic nerve', 'start_paragraph_id': 7, 'start_character': 237, 'end_paragraph_id': 7, 'end_character': 251, 'bleu_score': 1.0, 'section': 'Section::::Structure.\n'}]}, {'provenance': [{'wikipedia_id': '152465', 'title': 'Optic nerve', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 561, 'bleu_score': 0.9813933169956551, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1570895419176920784}, 'section': 'Section::::Structure.\n'}]}]