Input question: Caroline, John and Patrick were the children of which US President?

Output answer: john f kennedy

Input question: Accounting for approximately 84% of the earths mass, what is the layer that falls between the core and the crust?

Output answer: mantle

Input question: How was the Dutch dancer and courtesan Margaretha MacLeod, better known?

Output answer: mata hari

Input question: William, Duke of Gloucester, was the only one of which monarch's twelve children to survive infancy?

Output answer:
queen anne