Cottage is related to Roof. you are likely to find Roof in/at/on Garage. you are likely to find Garage in/at/on Home. Home is related to Letter. 
Column is related to Mass. Mass is related to Fundamental. 
Cottage <--RelatedTo--> Roof --AtLocation--> Garage --AtLocation--> Home <--RelatedTo--> Letter 
Column <--RelatedTo--> Mass <--RelatedTo--> Fundamental 