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: secretary duty 
Words: fax, program, file, make coffee, answer

SOLUTION: program

PROBLEM: Category: food 
Words: blunt, entree, frank, wienerwurst, bun

SOLUTION: blunt

PROBLEM: Category: direction 
Words: ground, down, up, emotional, south

SOLUTION:
emotional