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: animal 
Words: dangle, fly, run, car, pounce

Ex Output:
car


Ex Input:
Category: food 
Words: provision, frank, hot dog, goodies, harsh

Ex Output:
harsh


Ex Input:
Category: physical activity 
Words: horse, swim, bow, bend, duck

Ex Output:

horse