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: fax, file, format, image, document

SOLUTION: fax

PROBLEM: deck, stern, apron, blocking, caution

SOLUTION: stern

PROBLEM: strap lock, fret, notes, inlays, concerned

SOLUTION:
concerned