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: early, water, delayed, history, current

SOLUTION: water

PROBLEM: unyielding, concerted, firm, combined, united

SOLUTION: unyielding

PROBLEM: probation, alert, alright, fine, comfortable

SOLUTION:
probation