Determine the topic of the question. Question: "who sang what a wonderful world?" Topic:
Ans: What a Wonderful World

Determine the topic of the question. Question: "what is impingement of the shoulder?" Topic:
Ans: Impingement syndrome

Determine the topic of the question. Question: "where are the internal and external iliac arteries?" Topic:
Ans: External iliac artery

Determine the topic of the question. Question: "What is Ischemia or infarction??" Topic:

Ans: Ischemia