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:
motherboard, folder, hardware, file, schedule appointments

Ex Output:
schedule appointments


Ex Input:
bow, fold, hull, deck, head

Ex Output:
fold


Ex Input:
concise, cheese, meat, bun, frank

Ex Output:

concise