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: brisk, unprejudiced, fair, endure, clime

SOLUTION: unprejudiced

PROBLEM: Category: construction 
Words: dump truck, swift, crane, upraise, windlass

SOLUTION: swift

PROBLEM: Category: emotional status 
Words: fret, emotional, anxious, headstock, crying

SOLUTION:
headstock