input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Polishing of composite is problematic due to   (A) Soft matrix and hard filler particles   (B) Hard filler particles   (C) Hardness of matrix and filler particles   (D) None of the above
output: ['(A) Soft matrix and hard filler particles <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Soft matrix and hard filler particles  (B) Hard filler particles  (C) Hardness of matrix and filler particles  (D) None of the above <> possible answers', '  Polishing of composite is problematic due to <> context']