Input question: Who was killed at Ford's Theatre?

Output answer: abraham lincoln

Input question: How many legs (or arms) are most usually on a starfish?

Output answer: five

Input question: Which branch of mathematics takes its name from the Latin for 'pebble'?

Output answer: calculus

Input question: What word, which in Greek means 'with' or 'after', prefixes many literary and language terms to denote something in a different position?

Output answer:
meta