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 Q]: file, keys, organize, errands, correspondence
[EX A]: keys

[EX Q]: valley, house, cabin, squashed, flat
[EX A]: valley

[EX Q]: pinochle, gin, vodka, hearts, spades
[EX A]:
vodka