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.

Input: Consider Input: Category: baby animals 
Words: cub, identity, buck, fawn, kid

Output: identity


Input: Consider Input: Category: poker 
Words: fold, suits, deck, sail, hearts

Output: sail


Input: Consider Input: Category: emotional display 
Words: social, fawn, colt, woo, suppressed


Output: colt