input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The bacteria of oral flora which plays least role in periodontitis is:   (A) Actinomyces   (B) Actinomycetam comitans   (C) Spirocheates   (D) Bacteriodes
output: ['(A) Actinomyces <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Actinomyces  (B) Actinomycetam comitans  (C) Spirocheates  (D) Bacteriodes <> possible answers', '  The bacteria of oral flora which plays least role in periodontitis is: <> context']