Problem: Which US President was assassinated by Charles J. Guiteau in the Sixth Street Station of the Baltimore and Potomac Railroad in Washington, D.C.?
Answer: james garfield

Problem: Which animal derives its name from the native word for 'no drink'?
Answer: koala

Problem: In which year were both the Chernobyl and Challenger Shuttle disasters?
Answer: 1986

Problem: What is the name of the convex membrane that forms the anterior covering of the eye
Answer:
cornea