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: vittles, integrity, cheese, pork, frank

SOLUTION: integrity

PROBLEM: beautiful, classy, dull, comfortable, fine

SOLUTION: comfortable

PROBLEM: mansion, mountain, flat, house, duplex

SOLUTION:
mountain