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]: centimeter, yard, foot, milimeter, head
[EX A]: head

[EX Q]: flyaway, penalty, prime, fine, comfortable
[EX A]: comfortable

[EX Q]: jump, bus, fly, drive, bike
[EX A]:
jump