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: moral characteristic 
Words: unprejudiced, warm, fair, ok, balanced

Ex Output:
warm


Ex Input:
Category: aesthetic characteristic 
Words: pretty, probation, neat, fine, level

Ex Output:
probation


Ex Input:
Category: mode of transportation 
Words: dive, fly, soar, jog, wave

Ex Output:

dive