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: physical property 
Words: fat, vitamin c, area, brittleness, absorption

Ex Output:
vitamin c


Ex Input:
Category: aesthetic characteristic 
Words: hot, there, detailed, fine, probation

Ex Output:
probation


Ex Input:
Category: poker 
Words: deck, galley, check, joker, queen

Ex Output:

galley