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: food 
Words: fortitude, meat, cheese, frank, pork

Ex Output:
fortitude


Ex Input:
Category: outdoor sport activity 
Words: fish, hike, hunting, row, dog

Ex Output:
dog


Ex Input:
Category: moral characteristic 
Words: fair, trustworthy, deal, well, decent

Ex Output:

deal