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.

Ex Input:
unwarranted, fudge, pudding, lie, unlicensed

Ex Output:
pudding

Ex Input:
climbing, cow, hiking, fish, wrestle

Ex Output:
cow

Ex Input:
common, general, major, ordinary, universal

Ex Output:
major