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]: current, history, wave, jetstream, whirlpool
[EX A]: history

[EX Q]: sugars, fat, protein, skinny, iron
[EX A]: skinny

[EX Q]: roll, burger, discothek, hoagie, club
[EX A]:
discothek