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: club, group, meeting, grilled cheese, convention

Output: grilled cheese


Input: Consider Input: Category: emotional status 
Words: high quality, fine, annoyed, relaxed, ok

Output: high quality


Input: Consider Input: Category: store status 
Words: close, running., open, nearest, not open


Output: nearest