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: emotional status 
Words: downward, unhappy, down, shameful, disgusted

Ex Output:
downward


Ex Input:
Category: physical property 
Words: fat, vitamin c, area, brittleness, absorption

Ex Output:
vitamin c


Ex Input:
Category: moral characteristic 
Words: texture, ok, balanced, fair, unprejudiced

Ex Output:

texture