Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Ex Input:
fighter, boring, popular, standard, general

Ex Output:
fighter


Ex Input:
deck, caution, suits, queen, check

Ex Output:
caution


Ex Input:
knive, glass, frame, vinyl, translucent fabric

Ex Output:

knive