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: blow, waste away, fritter, dally, croquet

SOLUTION: croquet

PROBLEM: streamline, sustainability, private, firm, stiff

SOLUTION: stiff

PROBLEM: cabin, level, flat, round, hotel

SOLUTION:
level