Hints for loading ontlogy files with Prote'ge':

-The ontology models typically have some direct and indirect imports
-These need to be resolved by adapting the locations to the respective ontology files.
-The typical scenario is that Prote'ge' will ask you to resolve the locations after loading an ontology. The
 referenced vocabularies can all be found under the subfolder "Vocabularies" of the folder containing this document
-In case Prote'ge' does not react as appropriate, you may directly edit the entries in the accompanying "catalog-v001.xml" files

-Extra hint: The case study model for pipe network design from Chapter 6 has no derivation implementation and has therefore been put under an extra folder
 on the level of this document (it can NOT be found under the folder "OptimizationModels")