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:
fair, well, milky, medium, loyal

Ex Output:
loyal


Ex Input:
space, file, answer calls, fax, support

Ex Output:
space


Ex Input:
crane, goose, excavator, flamingo, swallow

Ex Output:

excavator