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: doughnut, fritter, fried, pie, seperate

A: seperate
****
Q: let go, praise, burn, fire, retire

A: burn
****
Q: cool, level, fair, tone, just

A:
just
****