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.

Example Input: Category: chocolate food 
Words: smuggled, brownie, fudge, pudding, truffles
Example Output: smuggled

Example Input: Category: activity 
Words: fried, spend, whittle, waste, fritter
Example Output: fried

Example Input: Category: boxing terminology 
Words: deck, tko, knockout, box, queen
Example Output:
queen