Application Ontology: Object-Relationship Model Instance
Car [0..1] has Model [1..*];
Car [0..1] has Make [1..*];
Car [0..1] has Year [1..*];
Car [0..1] has Price [1..*];
Car [0..1] has Mileage [1..*];
PhoneNr [1..*] is for Car [0..1];
PhoneNr [0..1] has Extension [1..*];
Car [0..*] has Feature [1..*];