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: outdoor sport activity 
Words: hiking, climbing, mice, fish, row

Output: mice


Input: Consider Input: Category: secretary duty 
Words: answer calls, image, organize, file, correspondence

Output: image


Input: Consider Input: Category: secretary duty 
Words: file, space, errands, type, correspondence


Output: space