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: personal characteristic 
Words: cool, calm, warm, persistent, level

Output: warm


Input: Consider Input: Category: mode of transportation 
Words: bee, swim, fly, car, walk

Output: bee


Input: Consider Input: Category: police punishment 
Words: money, prime, wispy, fine, beautiful


Output: beautiful