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: cool, unruffled, funny, chill, ethical

SOLUTION: chill

PROBLEM: elephant, duck, sprint, dog, lion

SOLUTION: sprint

PROBLEM: hiking, climbing, mice, fish, row

SOLUTION:
mice