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: down, emotional state, loveful, ashamed, flat

Ex Output:
flat


Ex Input:
Category: poker 
Words: call, sail, deck, board, queen

Ex Output:
sail


Ex Input:
Category: aesthetic characteristic 
Words: milky, unjust, tone, even, fair

Ex Output:

unjust