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]: group, clan, hamburger, club, bar
[A]: hamburger


[Q]: belated, jetstream, detestings, current, delayed
[A]: jetstream


[Q]: digger, concrete pourer, crane, derrick, excavator
[A]:
derrick