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: condominium, duplex, studio, flat, level

SOLUTION: level

PROBLEM: replace, ice, fire, ban, hire

SOLUTION: ice

PROBLEM: ant, train, walk, jog, fly

SOLUTION:
ant