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: boats 
Words: bridge, deck, stern, dock, suits

SOLUTION: suits

PROBLEM: Category: consumer product 
Words: content, books, thing, program, jealous

SOLUTION: jealous

PROBLEM: Category: personal characteristic 
Words: positive, optimist, persistent, cool, mild

SOLUTION:
mild