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: hamster, mice, fish, tiger, row

SOLUTION: row

PROBLEM: Category: consumer product 
Words: content, panicked, file, substance, jewelry

SOLUTION: panicked

PROBLEM: Category: animal 
Words: car, fly, spider, bird, run

SOLUTION:
car