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: unflappalbe, refreshing, funny, cool, confident

Output: refreshing


Input: Consider Input: ice, let go, fire, sack, replace

Output: ice


Input: Consider Input: meeting, hoagie, club, discothek, bar


Output: hoagie