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: season 
Words: winter, roll, spring, hiems, fall

Output: roll


Input: Consider Input: Category: baby animals 
Words: calf, fawn, cub, cute, woods

Output: cute


Input: Consider Input: Category: computers 
Words: fax, format, document, software, file


Output: fax