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: baby animals 
Words: buck, bambi, lust, fawn, deer

Ex Output:
lust


Ex Input:
Category: employment activity 
Words: sack, inferno, promote, empower, fire

Ex Output:
inferno


Ex Input:
Category: aesthetic characteristic 
Words: dishonest, cool, pale, fair, level

Ex Output:

dishonest