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: goat, iguana, raft, hamster, fish

A: raft
****
Q: level, draw, deck, tko, punch

A: draw
****
Q: below, backward, melancholy, down, ground

A:
melancholy
****