The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Which of the following is not a small round cell tumor?   (A) Neuroblastoma   (B) Retinoblastoma   (C) Ewing's sarcoma   (D) Hemangiosarcoma
['(D) Hemangiosarcoma <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) Neuroblastoma \n (B) Retinoblastoma \n (C) Ewing's sarcoma \n (D) Hemangiosarcoma <> possible answers", '  Which of the following is not a small round cell tumor? <> context@']