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.

Input: Consider Input: Category: outdoor sport activity 
Words: swim, wrestle, fish, canyoning, horse

Output: horse


Input: Consider Input: Category: poker 
Words: blind, chips, queen, gunwale, deck

Output: gunwale


Input: Consider Input: Category: boats 
Words: box, hull, lifeline, bridge, deck


Output: box