Mortgage is related to Prime. Prime is related to Middle. Middle is a different concept from Top. Lid is a type of Top. 
Flying is related to Smoke. Smoke is related to Output. Output is related to Flash. Flash is a type of Appear. 
Mortgage <--RelatedTo--> Prime <--RelatedTo--> Middle <--DistinctFrom--> Top <--IsA-- Lid 
Flying <--RelatedTo--> Smoke <--RelatedTo--> Output <--RelatedTo--> Flash --IsA--> Appear 