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: elephant, duck, sprint, dog, lion

SOLUTION: sprint

PROBLEM: blow, waste away, fritter, dally, croquet

SOLUTION: croquet

PROBLEM: unjust, fair, variety, tone, light

SOLUTION:
unjust