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: corporate 
Words: solid, sustainability, streamline, firm, private

Output: solid


Input: Consider Input: Category: emotional status 
Words: descending, disgusted, down, miserable, emotional

Output: descending


Input: Consider Input: Category: emotional display 
Words: swoon, fawn, pester, love, deer


Output: deer