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: kitchenware 
Words: spoon, glass, bowl, lead, cup

SOLUTION: lead

PROBLEM: Category: military rank 
Words: general, fighter, normal, major, lieutenant

SOLUTION: normal

PROBLEM: Category: corporate 
Words: common, taut, firm, corporation, streamline

SOLUTION:
taut