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: moral characteristic 
Words: light, unprejudiced, honorable, fair, unjust

Ex Output:
light


Ex Input:
Category: moral characteristic 
Words: honorable, balanced, fair, pale, trustworthy

Ex Output:
pale


Ex Input:
Category: geographical property 
Words: condominium, flat, valley, even, hill

Ex Output:

condominium