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: geographical property 
Words: flat, horizontal, smooshed, elevation, house

Output: house


Input: Consider Input: Category: temperature 
Words: cold, cool, icy, assured, mild

Output: assured


Input: Consider Input: Category: direction 
Words: emotionalities, flat, backward, falling, down


Output: emotionalities