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: current, blue, detestings, up to the moment, history

Ex Output:
blue


Ex Input:
Category: emotional status 
Words: merchandise, angry, ecstatic, content, joyful

Ex Output:
merchandise


Ex Input:
Category: social gathering 
Words: dance hall, clan, club, meeting, blt

Ex Output:

blt