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: weather 
Words: luke, equitable, clime, fair, mild

Ex Output:
equitable


Ex Input:
Category: bird 
Words: concrete pourer, flamingo, egret, crane, duck

Ex Output:
concrete pourer


Ex Input:
Category: baby animals 
Words: cub, colt, follow, buck, fawn

Ex Output:

follow