input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In which of the following conditions is the role of microbial plaque most obscure:   (A) Periodontitis   (B) Juvenile periodontitis   (C) Desquamative gingivitis   (D) Necrotising ulcerative gingivitis
output: ['(C) Desquamative gingivitis <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Periodontitis  (B) Juvenile periodontitis  (C) Desquamative gingivitis  (D) Necrotising ulcerative gingivitis <> possible answers', '  In which of the following conditions is the role of microbial plaque most obscure: <> context']