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: acceptable, mad, fine, comfortable, probation

SOLUTION: probation

PROBLEM: unwarranted, fudge, pudding, lie, unlicensed

SOLUTION: pudding

PROBLEM: fly, walk, spider, eagle, bus

SOLUTION:
bus