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: decent, impartial, light, fair, dishonest

Ex Output:
light


Ex Input:
Category: geographical property 
Words: mountain, flat, hill, mansion, plain

Ex Output:
mansion


Ex Input:
Category: bird 
Words: swallow, davit, crane, parrot, pelican

Ex Output:

davit