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]: trap, kayak, bat, climbing, fish
[EX A]: bat

[EX Q]: camp, fish, iguana, hike, kayak
[EX A]: iguana

[EX Q]: hand, finger, foot, knee, centimeter
[EX A]:
centimeter