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: emotional status 
Words: descending, disgusted, down, miserable, emotional

Ex Output:
descending


Ex Input:
Category: emotional status 
Words: alert, fine, content, annoyed, suspension

Ex Output:

suspension