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: physical property 
Words: fat, area, ugly, capacitance, calcium

Ex Output:
calcium


Ex Input:
Category: outdoor sport activity 
Words: wrestle, fish, iguana, hiking, hunt

Ex Output:
iguana


Ex Input:
Category: store status 
Words: closer, finished for the day, close, running., not open

Ex Output:

closer