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: military rank 
Words: general, fighter, normal, major, lieutenant

Ex Output:
normal


Ex Input:
Category: weather 
Words: brisk, fair, sunny, cold, balanced

Ex Output:
balanced


Ex Input:
Category: nutritional value 
Words: big boned, vitamin c, fiber, sugar, fat

Ex Output:

big boned