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: police punishment 
Words: fine, prime, firstrate, comfortable, ticket

Ex Output:
comfortable


Ex Input:
Category: bird 
Words: winch, swallow, winch, crane, parrot

Ex Output:
winch


Ex Input:
Category: police punishment 
Words: probation, wispy, hearing, high quality, fine

Ex Output:

high quality