Pillow is related to Case. Case is related to Job. 
Fraction is related to Quarter. Quarter is a type of Coin. Reverse is part of Coin. Reverse is part of Car. 
Pillow <--RelatedTo--> Case <--RelatedTo--> Job 
Fraction <--RelatedTo--> Quarter --IsA--> Coin <--PartOf-- Reverse --PartOf--> Car 