TASK DEFINITION: Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.
PROBLEM: Category: physical activity 
Words: bend, jog, get down, duck, pig

SOLUTION: pig

PROBLEM: Category: personal characteristic 
Words: assured, refreshing, unruffled, cool, positive

SOLUTION: refreshing

PROBLEM: Category: bird 
Words: dump truck, pelican, goose, crane, derrick

SOLUTION:
dump truck