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: secretary duty 
Words: folder, support, order office supplies, correspondence, file

Ex Output:
folder


Ex Input:
Category: fried food 
Words: croquet, dumpling, fritter, spend, patty

Ex Output:
spend


Ex Input:
Category: nutritional value 
Words: fat, calcium, sugar, absorption, fiber

Ex Output:

absorption