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:
unflappalbe, refreshing, funny, cool, confident

Ex Output:
refreshing


Ex Input:
fudge, molasses, cream, tart, banned

Ex Output:
banned


Ex Input:
iguana, goat, fish, climbing, shark

Ex Output:

climbing