Determine the topic of the question. Question: "what caused the world war 2?" Topic:
Ans: Causes of World War II

Determine the topic of the question. Question: "Who is the rap singer in right round with kesha in the background? *(dancer)*?" Topic:
Ans: Right Round

Determine the topic of the question. Question: "how many amendments in the US constitution?" Topic:
Ans: List of amendments to the United States Constitution

Determine the topic of the question. Question: "what are add ons?" Topic:
Ans: Add-on