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: bus, fly, jog, beetle, drive

SOLUTION: beetle

PROBLEM: Category: corporate 
Words: solid, sustainability, streamline, firm, private

SOLUTION: solid

PROBLEM: Category: corporate 
Words: rigged, firm, ceo, llc, corporation

SOLUTION:
rigged