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: regular, major, general, soldier, cadet

Ex Output:
regular


Ex Input:
Category: shady activities 
Words: falsehood, banned, heavy, unlicensed, fudge

Ex Output:
heavy


Ex Input:
Category: aesthetic characteristic 
Words: milky, pale, fair, tangle, size

Ex Output:

tangle