Danger is related to Concept. Property is a type of Concept. Property is related to Car. Car can be used for Fun. 
Airplane is related to Jet. Jet is related to Fast. Fast is related to Fall. 
Danger <--RelatedTo--> Concept <--IsA-- Property <--RelatedTo--> Car --UsedFor--> Fun 
Airplane <--RelatedTo--> Jet <--RelatedTo--> Fast <--RelatedTo--> Fall 