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: secretary duty 
Words: file, software, schedule, support, order office supplies

Output: software


Input: Consider Input: Category: emotional status 
Words: content, hearing, fine, happy, alert

Output: hearing


Input: Consider Input: Category: weather 
Words: tangle, 70, fair, unjust, clime


Output: unjust