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]: fire, hire, heat, inferno, earth
[EX A]: hire

[EX Q]: keys, file, download, folder, type
[EX A]: type

[EX Q]: cake, waste away, fritter, squander, whittle
[EX A]:
cake