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: weather 
Words: equitable, fair, windy, cold, raining

SOLUTION: equitable

PROBLEM: Category: bird 
Words: winch, swift, crane, hoist, ostrich

SOLUTION: winch

PROBLEM: Category: location (proximity) 
Words: running., close, bordering, nearer, touching

SOLUTION:
running.