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: hoist, sandpiper, crane, swallow, heron

SOLUTION: hoist

PROBLEM: nervous, frustrated, fret, jack, concerned

SOLUTION: jack

PROBLEM: soldier, sergeant, general, popular, colonel

SOLUTION:
popular