you are likely to find Book in/at/on Classroom. Book is related to Storage. Storage is related to Rack. 
Buy is related to Transaction. Transaction is related to Fraud. Fraud is related to Rip. 
Classroom <--AtLocation-- Book <--RelatedTo--> Storage <--RelatedTo--> Rack 
Buy <--RelatedTo--> Transaction <--RelatedTo--> Fraud <--RelatedTo--> Rip 