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: boxing terminology 
Words: deck, tko, box, glove, sail

SOLUTION: sail

PROBLEM: Category: computers 
Words: hardware, sort mail, download, program, file

SOLUTION: sort mail

PROBLEM: Category: emotional status 
Words: down, ashamed, sliding, disgusted, kind

SOLUTION:
sliding