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:
pack, hearts, deck, queen, rudder

Ex Output:
rudder


Ex Input:
spatula, panel, plastic, glass, translucent fabric

Ex Output:
spatula


Ex Input:
swoon, colt, kid, fawn, antling

Ex Output:

swoon