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: chocolate food 
Words: rich, molasses, fudge, brownies, wrongful

Ex Output:
wrongful


Ex Input:
Category: physical activity 
Words: bend, winter, fall, climb, exercise

Ex Output:
winter


Ex Input:
Category: employment activity 
Words: replace, fire, retire, air, remove

Ex Output:

air