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]: crane, ostrich, davit, dump truck, pelican
[EX A]: dump truck

[EX Q]: melancholy, descending, emotionalities, emotional, down
[EX A]: descending

[EX Q]: sail, joker, board, deck, queen
[EX A]:
sail