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: military rank 
Words: regular, major, general, soldier, cadet

Output: regular


Input: Consider Input: Category: secretary duty 
Words: schedule, file, answer calls, correspondence, ram

Output: ram


Input: Consider Input: Category: emotional display 
Words: cub, fawn, culture, cajole, identity


Output: cub