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]: invent, unlicensed, brownies, lie, fudge
[EX A]: brownies

[EX Q]: prison, mad, arrest, fine, wispy
[EX A]: mad

[EX Q]: shut down, on top of, close, closest, nearest
[EX A]:
shut down