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: animal 
Words: dangle, fly, run, car, pounce

SOLUTION: car

PROBLEM: Category: outdoor sport activity 
Words: hiking, climbing, mice, fish, row

SOLUTION: mice

PROBLEM: Category: bird 
Words: tackle, winch, swallow, ostrich, crane

SOLUTION:
tackle