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:
variety, medium, endure, size, fair

Ex Output:
endure


Ex Input:
current, history, wave, jetstream, whirlpool

Ex Output:
history


Ex Input:
alright, fine, annoyed, high quality, content

Ex Output:

high quality