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: bird 
Words: winch, swift, crane, hoist, ostrich

Output: winch


Input: Consider Input: Category: emotional status 
Words: acceptable, fine, neat, relaxed, annoyed

Output: neat


Input: Consider Input: Category: aesthetic characteristic 
Words: dull, flyaway, bright, neat, fine


Output: flyaway