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:
heron, davit, egret, derrick, crane

Ex Output:
davit


Ex Input:
joker, fold, check, deck, jab

Ex Output:
jab


Ex Input:
condominium, smooshed, lined, smooth, flat

Ex Output:

condominium