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: club, roll, doorstep, discothek, toast

Ex Output:
discothek


Ex Input:
Category: aesthetic characteristic 
Words: high quality, fine, attractive, alright, level

Ex Output:
alright


Ex Input:
Category: store status 
Words: steady, slow, close, gated, neighboring

Ex Output:

neighboring