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: type of sandwich 
Words: submarine, burger, bar, lettuce, club

Ex Output:
bar


Ex Input:
Category: aesthetic characteristic 
Words: 70, pale, fair, light, milky

Ex Output:
70


Ex Input:
Category: moral characteristic 
Words: decent, fair, loyal, deal, unprejudiced

Ex Output:

deal