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: neat, beautiful, dull, fine, firstrate

SOLUTION: firstrate

PROBLEM: level, flat, apartment, squashed, lined

SOLUTION: lined

PROBLEM: decent, flaxen, level, cool, fair

SOLUTION:
decent