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:
condominium, smooshed, lined, smooth, flat

Ex Output:
condominium


Ex Input:
trap, kayak, bat, climbing, fish

Ex Output:
bat


Ex Input:
rum, beer, pinochle, tonic, gin

Ex Output:

pinochle