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: board, caution, fight, punch, deck

SOLUTION: board

PROBLEM: lifeline, knockout, deck, punch, tko

SOLUTION: lifeline

PROBLEM: queen, dock, galley, gunwale, deck

SOLUTION:
queen