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: flamingo, crane, davit, pelican, derrick

A: davit
****
Q: air, fire, hire, ban, promote

A: air
****
Q: lined, even, horizontal, smooth, flat

A:
even
****