TASK DEFINITION: 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.
PROBLEM: loveful, up, down, remorseful, melancholy

SOLUTION: up

PROBLEM: emotional upsets, emotional supports, down, ashamed, up

SOLUTION: up

PROBLEM: bat, tiger, cow, fish, kayak

SOLUTION:
kayak