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: neat, alright, beautiful, level, fine

Ex Output:
alright


Ex Input:
Category: body part 
Words: inch, head, foot, ear, finger

Ex Output:
inch


Ex Input:
Category: physical property 
Words: ugly, absorption, vitamin c, fat, thin

Ex Output:

vitamin c