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: bird 
Words: flamingo, crane, neck, ostrich, davit

SOLUTION: davit

PROBLEM: Category: direction 
Words: remorseful, south, descending, downward, down

SOLUTION: remorseful

PROBLEM: Category: construction 
Words: egret, concrete pourer, derrick, crane, winch

SOLUTION:
egret