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: elephant, duck, sprint, dog, lion

SOLUTION: sprint

PROBLEM: level, knockout, deck, fight, gunwale

SOLUTION: gunwale

PROBLEM: disgusted, emotional, down, ground, ashamed

SOLUTION:
ground