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]: lifeline, knockout, deck, punch, tko
[EX A]: lifeline

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

[EX Q]: crane, davit, flamingo, tackle, heron
[EX A]:
tackle