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: construction 
Words: windlass, crane, dump truck, pelican, digger

Ex Output:
pelican


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

Ex Output:
folder


Ex Input:
Category: moral characteristic 
Words: matter of fact, frank, loyalty, weenie, honest

Ex Output:

weenie