Soft is related to Quiet. you are likely to find Quiet in/at/on Home. Home is related to Mortgage. 
Commodity is a type of Object. Object is related to Bell. Bell is related to Shell. Shell is related to Hard. 
Soft <--RelatedTo--> Quiet --AtLocation--> Home <--RelatedTo--> Mortgage 
Commodity --IsA--> Object <--RelatedTo--> Bell <--RelatedTo--> Shell <--RelatedTo--> Hard 