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

Output: pelican


Input: Consider Input: Category: animal 
Words: stingray, horse, iguana, wrestle, fish

Output: wrestle


Input: Consider Input: Category: temperature 
Words: optimist, chill, relaxing, tropical, cool


Output: optimist