Connection is a type of Shape. Connection is related to Cable. Cable is a type of Device. Trigger is a type of Device. 
one thing you do when you Smoke is Cancer. Smoke is related to Lung. 
Shape <--IsA-- Connection <--RelatedTo--> Cable --IsA--> Device <--IsA-- Trigger 
Cancer <--HasSubevent-- Smoke <--RelatedTo--> Lung 