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: unflappalbe, refreshing, funny, cool, confident

A: refreshing
****
Q: bowl, plastic, glass, panel, lead

A: bowl
****
Q: fix, replace, fib, pie, fudge

A:
pie
****