input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The most characteristic feature of basal cell carcinoma is:   (A) Keratin pearls   (B) Foam cells   (C) Nuclear palisading   (D) Psammoma bodies
output: ['(C) Nuclear palisading <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Keratin pearls  (B) Foam cells  (C) Nuclear palisading  (D) Psammoma bodies <> possible answers', '  The most characteristic feature of basal cell carcinoma is: <> context']