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: cold, 70, fair, well, luke

SOLUTION: well

PROBLEM: Category: ocean 
Words: signal, timely, brine, flow, current

SOLUTION: timely

PROBLEM: Category: construction 
Words: crane, winch, excavator, steam roller, tackle

SOLUTION:
winch