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: activity 
Words: dally, goodbye, fritter, whittle, dumpling

Ex Output:
dumpling


Ex Input:
Category: physical property 
Words: obese, heavy, area, chunky, fat

Ex Output:
heavy


Ex Input:
Category: outdoor sport activity 
Words: iguana, fish, hike, climbing, camp

Ex Output:

iguana