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: activity 
Words: dally, goodbye, fritter, whittle, dumpling

Output: dumpling


Input: Consider Input: Category: animal 
Words: fly, dangle, bee, jump, flap

Output: flap


Input: Consider Input: Category: emotional status 
Words: down, emotional, falling, unhappy, ashamed


Output: falling