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: streamline, sustainability, private, firm, stiff

SOLUTION: stiff

PROBLEM: sausage, hot dog, concise, frank, weenie

SOLUTION: concise

PROBLEM: probation, happy, jail, fine, wispy

SOLUTION:
happy