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.

Ex Input:
Category: emotional status 
Words: sliding, down, emotionalities, remorseful, emotional upsets

Ex Output:
sliding


Ex Input:
Category: physical property 
Words: large, obese, fat, chunky, fiber

Ex Output:
fiber


Ex Input:
Category: weather 
Words: raining, warm, fair, 70, cool

Ex Output:

cool