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: fret, angry, jack, nervous, emotionalities

SOLUTION: jack

PROBLEM: gunwale, deck, punch, sail, bow

SOLUTION: punch

PROBLEM: box, hull, lifeline, bridge, deck

SOLUTION:
box