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: date status 
Words: early, current, tide, up to the moment, do tests

Output: tide


Input: Consider Input: Category: personal characteristic 
Words: cool, calm, warm, persistent, level

Output: warm


Input: Consider Input: Category: type of rigidity 
Words: firm, private, solid, tough, stiff


Output: private