Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

[Q]: Category: bird 
Words: dump truck, tackle, crane, hoist, davit
[A]: dump truck


[Q]: Category: military rank 
Words: general, fighter, normal, major, lieutenant
[A]: normal


[Q]: Category: military rank 
Words: general, soldier, admiral, boring, private
[A]:
boring