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: brash, frank, bun, hot dog, grub

SOLUTION: brash

PROBLEM: hoist, sandpiper, crane, swallow, heron

SOLUTION: hoist

PROBLEM: whirlpool, water, sea, detests, current

SOLUTION:
detests