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]: fly, glide, flutter, eagle, train
[EX A]: eagle

[EX Q]: run, exercise, fall, drop, leaves
[EX A]: leaves

[EX Q]: do tests, wave, data sets, history, current
[EX A]:
wave