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: body part 
Words: elbow, foot, knee, inch, hand

Output: inch


Input: Consider Input: Category: activity 
Words: dally, goodbye, fritter, whittle, dumpling

Output: dumpling


Input: Consider Input: Category: weather 
Words: fair, raining, tangle, 70, variety


Output: variety