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: social gathering 
Words: place, club, outing, lettuce, group

Output: lettuce


Input: Consider Input: Category: aesthetic characteristic 
Words: size, alright, even, variety, fair

Output: alright


Input: Consider Input: Category: employment activity 
Words: fire, praise, promote, let go, ice


Output: ice