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: social gathering 
Words: picnic, french toast, clan, club, bar

SOLUTION: french toast

PROBLEM: Category: physical activity 
Words: bend, winter, fall, climb, exercise

SOLUTION: winter

PROBLEM: Category: construction 
Words: steam roller, pelican, crane, upraise, windlass

SOLUTION:
pelican