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: follow, colt, fawn, cub, calf

Ex Output:
follow


Ex Input:
Category: nutritional value 
Words: iron, heavy, vitamin c, fat, brittleness

Ex Output:
brittleness


Ex Input:
Category: moral characteristic 
Words: unjust, dishonest, clime, fair, trustworthy

Ex Output:

clime