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: ocean 
Words: up to the moment, tide, current, jetstream, brine

Output: up to the moment


Input: Consider Input: Category: bird 
Words: hummingbird, tackle, crane, hoist, tackle

Output: tackle


Input: Consider Input: Category: geographical property 
Words: paved, even, hill, level, flat


Output: even