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: fair, sunny, stormy, make the grade, variety

Output: variety


Input: Consider Input: Category: baby animals 
Words: buck, bambi, lust, fawn, deer

Output: lust


Input: Consider Input: Category: secretary duty 
Words: keys, errands, answer, make coffee, file


Output: keys