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: date status 
Words: delayed, current, whirlpool, do tests, up to the moment

Ex Output:
whirlpool


Ex Input:
Category: social gathering 
Words: club, bar, dance hall, discothek, roll

Ex Output:
roll


Ex Input:
Category: police punishment 
Words: prime, firstrate, alert, fine, prison

Ex Output:

alert