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: hull, galley, deck, lifeline, tko

SOLUTION: tko

PROBLEM: hoist, crane, excavator, winch, windlass

SOLUTION: hoist

PROBLEM: glass, lead, spatula, spyhole, metal

SOLUTION:
spatula