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: secretary duty 
Words: errands, schedule appointments, image, make coffee, file

Ex Output:
image


Ex Input:
Category: police punishment 
Words: comfortable, money, fine, prison, jail time

Ex Output:
comfortable


Ex Input:
Category: direction 
Words: forward, backward, down, emotionalities, sliding

Ex Output:

emotionalities