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: horse, trap, tiger, sea turtle, fish

SOLUTION: trap

PROBLEM: fine, level, pretty, mad, detailed

SOLUTION: mad

PROBLEM: flat, round, even, duplex, cabin

SOLUTION:
even