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:
flamingo, crane, davit, pelican, derrick

Ex Output:
davit


Ex Input:
fret, emotional supports, output cord, angry, concerned

Ex Output:
output cord


Ex Input:
jog, swim, fly, pounce, glide

Ex Output:

pounce