Concentration is related to Camp. Camp is related to Sleep. Book would make you want to Sleep. 
Wheel is a type of Transport. Shoulder is a type of Transport. Shoulder is part of Body. Body is related to Shrug. 
Concentration <--RelatedTo--> Camp <--RelatedTo--> Sleep <--CausesDesire-- Book 
Wheel --IsA--> Transport <--IsA-- Shoulder --PartOf--> Body <--RelatedTo--> Shrug 