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:
grasshopper, fly, swim, dangle, jog

Ex Output:
jog


Ex Input:
wispy, jail, hot, hearing, fine

Ex Output:
hot


Ex Input:
alert, mad, fine, comfortable, penalty

Ex Output:

penalty