Appointment is a type of Decision. Decision is related to Turn. Bottom is a type of Turn. 
Extra is a type of Artifact. Extra is related to Trailer. Trailer is related to Trash. 
Appointment --IsA--> Decision <--RelatedTo--> Turn <--IsA-- Bottom 
Artifact <--IsA-- Extra <--RelatedTo--> Trailer <--RelatedTo--> Trash 