[TASK] Introduce CarModel which can have CarInstances.

src/main/java/lu/jpt/csparqltest/Main.java

@@ -34,7 +34,7 @@ public class Main {
 		CsparqlEngine engine = new CsparqlEngineImpl();
 		engine.initialize(true);
 		
-		// Add static knowledge into local graph from file
+		// Add local background knowledge from file into graph
 		try {
 			engine.putStaticNamedModel("http://example.org/carSimKnowledgeGraph", CsparqlUtils.serializeRDFFile("data/carData.rdf"));
 		} catch (Exception e) {

src/main/java/lu/jpt/csparqltest/rentacar/Car.java

@@ -13,7 +13,7 @@ public class Car {
 	
 	// Fix knowledge about the available car types:
 	private static final String[] CAR_TYPENAME = {"A", "B", "C"};
-	private static final String[] REQUIRED_DRIVER_LICENSE = {"B", "B", "C"};
+	private static final String[] REQUIRED_DRIVER_LICENSE = {"B", "B", "B"};
 	private static final int[] MIN_RPM = {2000, 800, 1400};
 	private static final int[] MAX_RPM = {4300, 1900, 2500};
 	private static final double[] MIN_TIRE_PRESSURE = {2.9, 3.5, 2.6};