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:
luke, fair, mild, tangle, texture

Ex Output:
texture

Ex Input:
fat, calories, vitamin c, absorption, carbs

Ex Output:
absorption

Ex Input:
software, type, motherboard, file, keys

Ex Output:
type