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:
blue, wave, current, timely, drink

Ex Output:
timely


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

Ex Output:

gunwale