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:
descending, disgusted, emotionalities, emotional supports, down

Ex Output:
descending


Ex Input:
jog, waggle, pounce, fly, bats

Ex Output:
jog


Ex Input:
shop, program, angry, content, tools

Ex Output:

angry