input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Keyhole-shaped visual field defect is seen in lesion involving which of the following regions?   (A) Optic disk   (B) Optic chiasma   (C) Lateral geniculate body   (D) Occipital lobe
output: ['(C) Lateral geniculate body <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Optic disk  (B) Optic chiasma  (C) Lateral geniculate body  (D) Occipital lobe <> possible answers', '  Keyhole-shaped visual field defect is seen in lesion involving which of the following regions? <> context']