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: physical property 
Words: large, fat, capacitance, calories, ugly

Ex Output:
calories


Ex Input:
Category: military rank 
Words: regular, major, general, soldier, cadet

Ex Output:
regular


Ex Input:
Category: poker 
Words: chips, board, suits, ring, deck

Ex Output:

ring