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: hot, classy, pretty, fine, probation

A: probation
****
Q: fat, ugly, sugar, salt, protein

A: ugly
****
Q: spider, beetle, glide, fly, cockroach

A:
glide
****