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: ring, deck, pack, box, level

SOLUTION: pack

PROBLEM: tackle, davit, swift, crane, steam roller

SOLUTION: steam roller

PROBLEM: classy, fine, there, beautiful, custody

SOLUTION:
custody