Arm is related to Rifle. Rifle can be used for Hunt. Hunt is related to Game. 
Mortgage is related to House. House is a type of Management. Management is derived from Manage. 
Arm <--RelatedTo--> Rifle --UsedFor--> Hunt <--RelatedTo--> Game 
Mortgage <--RelatedTo--> House --IsA--> Management --DerivedFrom--> Manage 