input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 13 year old girl with soft painful swelling on posterior aspect of thigh. Color Doppler showed multiple venous channels without any major arterial feeder. All of the following are liquid embolizing agents except   (A) Cyanoarylate   (B) Sodiumtetradecyl sulphate   (C) Polyvinyl alcohol   (D) Absolute alcohol
output: ['(C) Polyvinyl alcohol <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Cyanoarylate  (B) Sodiumtetradecyl sulphate  (C) Polyvinyl alcohol  (D) Absolute alcohol <> possible answers', '  A 13 year old girl with soft painful swelling on posterior aspect of thigh. Color Doppler showed multiple venous channels without any major arterial feeder. All of the following are liquid embolizing agents except <> context']