input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** What is the most common tumor of mediastinum?   (A) Neurogenic   (B) Thymoma   (C) Lymphoma   (D) Metastatic tumor
output: ['(A) Neurogenic <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Neurogenic  (B) Thymoma  (C) Lymphoma  (D) Metastatic tumor <> possible answers', '  What is the most common tumor of mediastinum? <> context']