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: employment activity 
Words: scold, water, fire, praise, replace

Output: water


Input: Consider Input: Category: date status 
Words: delayed, current, whirlpool, do tests, up to the moment

Output: whirlpool


Input: Consider Input: Category: employment activity 
Words: fire, instruct, inferno, retire, scold


Output: inferno