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, swim, waggle, soar, wave

SOLUTION: waggle

PROBLEM: mallet, winch, parrot, winch, crane

SOLUTION: winch

PROBLEM: cool, level, ethical, mild, classy

SOLUTION:
mild