Problem: Found near Avebury, Wiltshire, what, at 40 metres is Europe's highest pre-historic mound?
======
A: silbury hill

Problem: "What ""plot"" was Guy Fawkes involved in?"
======
A: gunpowder plot

Problem: The plant 'Ananas comosus provides us with which fruit?
======
A: pineapple

Problem: What is the US state capital of South Carolina?
======
A:
columbia