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: ubiquitous, captain, typical, general, boring

A: captain
****
Q: dangle, wave, eagle, fly, leap

A: wave
****
Q: fire, recruit, air, retire, empower

A:
air
****