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: fair, make the grade, trustworthy, alright, just

SOLUTION: make the grade

PROBLEM: down, kind, ashamed, sliding, unhappy

SOLUTION: sliding

PROBLEM: ghostly, milky, windy, fair, texture

SOLUTION:
windy