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: mode of transportation 
Words: bus, fly, jog, beetle, drive

Ex Output:
beetle


Ex Input:
Category: location (proximity) 
Words: beside, closest, close, adjacent, shut

Ex Output:
shut


Ex Input:
Category: physical property 
Words: pasty, sugars, large, fat, capacitance

Ex Output:

sugars