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.

Q: vodka, spider, gin, blackjack, go fish

A: vodka
****
Q: regular, general, captain, ubiquitous, popular

A: captain
****
Q: unbending, firm, stiff, resistant, streamline

A:
streamline
****