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: weather 
Words: raining, cold, sunny, alright, fair

Output: alright


Input: Consider Input: Category: police punishment 
Words: wispy, fine, probation, calm, prime

Output: calm


Input: Consider Input: Category: secretary duty 
Words: support, errands, format, file, schedule


Output: format