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]: doorstep, community, open-faced, club, hoagie
[A]: community


[Q]: luke, make the grade, fair, milky, deal
[A]: milky


[Q]: assured, cool, unruffled, mild, optimist
[A]:
mild