Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Ex Input:
Category: boxing terminology 
Words: deck, corner, blocking, call, box

Ex Output:
call


Ex Input:
Category: emotional display 
Words: buck, identity, culture, fawn, pester

Ex Output:
buck


Ex Input:
Category: bird 
Words: tackle, ostrich, crane, davit, egret

Ex Output:

davit