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: mode of transportation 
Words: bee, swim, fly, car, walk

SOLUTION: bee

PROBLEM: Category: weather 
Words: stormy, make the grade, fair, luke, honorable

SOLUTION: honorable

PROBLEM: Category: computers 
Words: space, motherboard, errands, file, keys

SOLUTION:
errands