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: employment activity 
Words: promote, ice, retire, ban, fire

Ex Output:
ice


Ex Input:
Category: date status 
Words: current, delayed, postponed, brine, late

Ex Output:
brine


Ex Input:
Category: alcoholic drinks 
Words: beer, gin, tequila, pinochle, rum

Ex Output:

pinochle