Input question: What marks a 40th wedding anniversary?

Output answer: ruby

Input question: What is the male voice range immediately above bass?

Output answer: bass baritone

Input question: In Greek mythology who was the husband of Helen?

Output answer: menelaus

Input question: In 1999, in the British Film Industry's list of best British films ever, what was the only film in the top ten to be made in the 1990s?

Output answer:
trainspotting