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: boats 
Words: chips, crew, bow, deck, bridge

Output: chips


Input: Consider Input: Category: emotional status 
Words: sad, remorseful, down, ashamed, sliding

Output: sliding


Input: Consider Input: Category: animals 
Words: sprint, duck, sheep, mallet, cow


Output: sprint