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: tiger, camp, cow, dog, fish

SOLUTION: camp

PROBLEM: bike, beetle, leap, ant, fly

SOLUTION: bike

PROBLEM: concrete pourer, tackle, crane, swift, excavator

SOLUTION:
swift