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: heron, davit, egret, derrick, crane

SOLUTION: davit

PROBLEM: elephant, duck, sprint, dog, lion

SOLUTION: sprint

PROBLEM: summer, trip, lift, plummet, fall

SOLUTION:
summer