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 activity 
Words: trip, jump, fall, equinox, exercise

Ex Output:
equinox


Ex Input:
Category: secretary duty 
Words: errands, fax, file, type, ram

Ex Output:
ram


Ex Input:
Category: fried food 
Words: sweet roll, danish, misuse, fritter, cake

Ex Output:

misuse