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: guitar part 
Words: neck, fret, jack, pick, angry

SOLUTION: angry

PROBLEM: Category: construction 
Words: windlass, crane, dump truck, pelican, digger

SOLUTION: pelican

PROBLEM: Category: outdoor sport activity 
Words: hike, mice, canoe, kayak, fish

SOLUTION:
mice