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: windy, 70, mild, fair, loyal

SOLUTION: loyal

PROBLEM: Category: outdoor sport activity 
Words: hiking, climbing, mice, fish, row

SOLUTION: mice

PROBLEM: Category: geographical property 
Words: level, smooth, flat, lined, elevation

SOLUTION:
level