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: fly, glide, flutter, eagle, train

A: eagle
****
Q: danish, fried, lollygag, pastry, fritter

A: lollygag
****
Q: down, backward, sliding, forward, miserable

A:
miserable
****