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:
medium, unjust, flaxen, fair, texture

Ex Output:
unjust


Ex Input:
jog, flap, fly, bee, bus

Ex Output:
bee


Ex Input:
trustworthy, fair, decent, unjust, luke

Ex Output:

luke