input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** All of the following device work on traction principle except:   (A) Ferrier double bow separator.   (B) Elliot separator.   (C) Perry separator.   (D) None
output: ['(B) Elliot separator. <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Ferrier double bow separator.  (B) Elliot separator.  (C) Perry separator.  (D) None <> possible answers', '  All of the following device work on traction principle except: <> context']