input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The micro organism previously present in the Periapical tissues following obturation   (A) Persist and stimulate the formation of a granuloma   (B) Are eliminated by the natural defenses   (C) Re-enter and re-infect the sterile canal and are removed by surgery   (D) Are eliminated by the medicaments used in endodontic treatment
output: ['(B) Are eliminated by the natural defenses <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Persist and stimulate the formation of a granuloma  (B) Are eliminated by the natural defenses  (C) Re-enter and re-infect the sterile canal and are removed by surgery  (D) Are eliminated by the medicaments used in endodontic treatment <> possible answers', '  The micro organism previously present in the Periapical\ntissues following obturation <> context']