Input question: Found near Avebury, Wiltshire, what, at 40 metres is Europe's highest pre-historic mound?

Output answer: silbury hill

Input question: Which US President was assassinated in 1881?

Output answer: james garfield

Input question: The opera The Turn of the Screw by Benjamin Britten is based on whose novella

Output answer: henry james

Input question: In which city is Cain's brewery situated?

Output answer:
liverpool