Propose is related to Confession. Confession is a type of Document. Inventory is a type of Document. Inventory is a type of List. 
Mortgage is related to House. you are likely to find Backyard in/at/on House. 
Propose <--RelatedTo--> Confession --IsA--> Document <--IsA-- Inventory --IsA--> List 
Mortgage <--RelatedTo--> House <--AtLocation-- Backyard 