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: weather 
Words: windy, stormy, fair, tone, tangle

Output: tone


Input: Consider Input: Category: social gathering 
Words: place, club, outing, lettuce, group

Output: lettuce


Input: Consider Input: Category: emotional status 
Words: fret, sad, emotional, truss rod, crying


Output: truss rod