input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following arteries does not supply the circle of Willis?   (A) Anterior cerebral   (B) Middle cerebral   (C) Posterior-inferior cerebral   (D) Posterior communicating
output: ['(C) Posterior-inferior cerebral <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Anterior cerebral  (B) Middle cerebral  (C) Posterior-inferior cerebral  (D) Posterior communicating <> possible answers', '  Which of the following arteries does not supply the circle of Willis? <> context']