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]: current, wave, whirlpool, sea, data sets
[A]: data sets


[Q]: heron, davit, egret, derrick, crane
[A]: davit


[Q]: well, detached, decent, fine, level
[A]:
level