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: shark, dolphin, fish, hunting, cat

Ex Output:
hunting


Ex Input:
Category: emotional display 
Words: follow, doe, suppressed, culture, fawn

Ex Output:
doe


Ex Input:
Category: police punishment 
Words: alert, hearing, fine, firstrate, suspension

Ex Output:

alert