Q: What is the question to: "The war had its origin in the issue of slavery , especially the extension of slavery into the western territories."? The topic is American Civil War.
A: "what triggered the civil war?"

Q: What is the question to: "There have been four successful robotically operated Mars rovers."? The topic is Mars rover.
A: "how many land rovers have landed on mars?"

Q: What is the question to: "Root beer is a carbonated , sweetened beverage , originally made using the root of a sassafras plant (or the bark of a sassafras tree) as the primary flavor."? The topic is Root beer.
A: "how is root beer made??"

Q: What is the question to: "The soybean (US) or soya bean (UK) (Glycine max) is a species of legume native to East Asia, widely grown for its edible bean which has numerous uses."? The topic is Soybean.
A:
"what is soy made from?"