Q: Determine the topic of the question. Question: "what is puerto rico currency?" Topic:
A: Currencies of Puerto Rico

Q: Determine the topic of the question. Question: "who won fifa world cup 2010?" Topic:
A: 2010 FIFA World Cup

Q: Determine the topic of the question. Question: "what does xylem transport?" Topic:
A: Xylem

Q: Determine the topic of the question. Question: "what year did martin luther king die?" Topic:
A:
Martin Luther King, Jr.