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: blue, wave, current, timely, drink

SOLUTION: timely

PROBLEM: hot, classy, pretty, fine, probation

SOLUTION: probation

PROBLEM: shut, on top of, open, shut down, close

SOLUTION:
on top of