Q: What is the question to: "In computer hardware , a host controller, host adapter, or host bus adapter (HBA) connects a host system (the computer ) to other network and storage devices."? The topic is Host adapter.
A: "what is a bus adapter in a computer??"

Q: What is the question to: "Memphis had a population of 672,277 in 2011 making it the largest city in the state of Tennessee , the largest city on the Mississippi River , the third largest in the Southeastern United States , and the 20th largest in the United States."? The topic is Memphis, Tennessee.
A: "how many people live in memphis tennessee?"

Q: What is the question to: "Poison dart frog (also dart-poison frog, poison frog or formerly poison arrow frog) is the common name of a group of frogs in the family Dendrobatidae which are native to Central and South America ."? The topic is Poison dart frog.
A: "where are poison dart frog seen?"

Q: What is the question to: "Secretariat (March 30, 1970 October 4, 1989) was an American Thoroughbred racehorse that in 1973 became the first U.S. Triple Crown champion in 25 years."? The topic is Secretariat (horse).
A:
"when did secretariat win?"