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: beetle, fly, soar, bus, car

SOLUTION: beetle

PROBLEM: Category: type of sandwich 
Words: submarine, group, club, roll, grilled cheese

SOLUTION: group

PROBLEM: Category: food 
Words: goodies, wienerwurst, frank, hot dog, brash

SOLUTION:
brash