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: deck, knockout, bow, sail, rudder

SOLUTION: knockout

PROBLEM: gunwale, stern, deck, box, bow

SOLUTION: box

PROBLEM: dock, apron, head, deck, gunwale

SOLUTION:
apron