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: bow, draw, galley, deck, crew

SOLUTION: draw

PROBLEM: lollygag, cake, misuse, goodbye, fritter

SOLUTION: cake

PROBLEM: flat, mountain, valley, hill, duplex

SOLUTION:
duplex