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.

Input: Consider Input: fair, even, milky, ghostly, luke

Output: luke


Input: Consider Input: grasshopper, fly, swim, dangle, jog

Output: jog


Input: Consider Input: fly, beetle, bats, drive, dangle


Output: drive