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: construction 
Words: hoist, tackle, digger, excavator, crane

Output: tackle


Input: Consider Input: Category: emotional status 
Words: down, melancholy, below, loveful, kind

Output: below


Input: Consider Input: Category: shady activities 
Words: smuggled, smear, molasses, fib, fudge


Output: molasses