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:
meeting, community, lettuce, club, cinema

Ex Output:
lettuce


Ex Input:
fritter, sweet roll, whittle, seperate, divide

Ex Output:
sweet roll


Ex Input:
fine, ticket, arrest, wispy, calm

Ex Output:

calm