TASK DEFINITION: Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.
PROBLEM: fly, leap, glide, car, bike

SOLUTION: leap

PROBLEM: fire, instruct, inferno, retire, scold

SOLUTION: inferno

PROBLEM: ghostly, just, tone, light, fair

SOLUTION:
just