An ontology about pizzas and their toppings.
This is an example ontology that contains all constructs required for the various versions of the Pizza Tutorial run by Manchester University (see http://owl.cs.manchester.ac.uk/publications/talks-and-tutorials/protg-owl-tutorial). (en)
v2.0 Added new annotations to the ontology using standard/well-know annotation properties
v1.5. Removed protege.owl import and references. Made ontology URI date-independent
v1.4. Added Food class (used in domain/range of hasIngredient), Added several hasCountryOfOrigin restrictions on pizzas, Made hasTopping invers functional (en)