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: aesthetic characteristic 
Words: 70, pale, fair, light, milky

Ex Output:
70


Ex Input:
Category: chocolate food 
Words: replace, fudge, cupcake, heavy, cream

Ex Output:
replace


Ex Input:
Category: boxing terminology 
Words: queen, corner, deck, jab, ring

Ex Output:

queen