input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 40 years old male with history of fall and one episode of vomiting near an alcohol shop. He was brought to casualty and he was awake with open eyes and had retrograde amnesia. Which of the following is most likely cause?   (A) Diffuse axonal injury   (B) Concussion   (C) Drunkenness   (D) Cerebral venous thrombosis
output: ['(B) Concussion <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Diffuse axonal injury  (B) Concussion  (C) Drunkenness  (D) Cerebral venous thrombosis <> possible answers', '  A 40 years old male with history of fall and one episode of vomiting near an alcohol shop. He was brought to casualty and he was awake with open eyes and had retrograde amnesia. Which of the following is most likely cause? <> context']