diff --git a/Assignment3/Raul Ortega Gonzalez - u120175/Task06.java b/Assignment3/Raul Ortega Gonzalez - u120175/Task06.java
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+++ b/Assignment3/Raul Ortega Gonzalez - u120175/Task06.java	
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+package semanticweb.assignment3;
+
+import java.io.InputStream;
+
+import org.apache.jena.ontology.Individual;
+import org.apache.jena.ontology.OntClass;
+import org.apache.jena.ontology.OntModel;
+import org.apache.jena.ontology.OntModelSpec;
+import org.apache.jena.rdf.model.ModelFactory;
+import org.apache.jena.rdf.model.Property;
+import org.apache.jena.util.FileManager;
+import org.apache.jena.vocabulary.VCARD;
+
+/**
+ * Task 07: Querying ontologies (RDFs)
+ * @author elozano
+ * @author isantana
+ *
+ */
+public class Task06
+{
+	public static String ns = "http://somewhere#";
+	public static String foafNS = "http://xmlns.com/foaf/0.1/";
+	public static String foafEmailURI = foafNS+"email";
+	public static String foafKnowsURI = foafNS+"knows";
+	public static String stringTypeURI = "http://www.w3.org/2001/XMLSchema#string";
+	
+	public static void main(String args[])
+	{
+		String filename = "resources/example5.rdf";
+		
+		// Create an empty model
+		OntModel model = ModelFactory.createOntologyModel(OntModelSpec.RDFS_MEM);
+		
+		// Use the FileManager to find the input file
+		InputStream in = FileManager.get().open(filename);
+	
+		if (in == null)
+			throw new IllegalArgumentException("File: "+filename+" not found");
+	
+		// Read the RDF/XML file
+		model.read(in, null);
+		
+		// Create a new class named "Researcher"
+		OntClass researcher = model.createClass(ns+"Researcher");
+		
+		// ** TASK 6.1: Create a new class named "University" **
+		OntClass university = model.createClass(ns+"University");
+		
+		// ** TASK 6.2: Add "Researcher" as a subclass of "Person" **
+		model.getOntClass(ns+"Person").addSubClass(researcher);
+		
+		// ** TASK 6.3: Create a new property named "worksIn" **
+		Property worksIn = model.createProperty(ns+"worksIn");
+		
+		// ** TASK 6.4: Create a new individual of Researcher named "Jane Smith" **
+		Individual janeSmith = researcher.createIndividual(ns+"Jane Smith");
+		
+		
+		// ** TASK 6.5: Add to the individual JaneSmith the fullName, given and family names **
+		janeSmith.addProperty(VCARD.FN, janeSmith);
+		janeSmith.addProperty(VCARD.Given, janeSmith);
+		janeSmith.addProperty(VCARD.Family, janeSmith);
+		
+		// ** TASK 6.6: Add UPM as the university where John Smith works **
+		Individual johnSmith = model.getIndividual(ns + "John Smith");
+		Individual UPM = university.createIndividual(ns + "UPM");
+		johnSmith.addProperty(worksIn, UPM);
+		
+		
+		model.write(System.out, "RDF/XML-ABBREV");
+	}
+}
diff --git a/Assignment3/Raul Ortega Gonzalez - u120175/Task07.java b/Assignment3/Raul Ortega Gonzalez - u120175/Task07.java
new file mode 100644
index 00000000..b1b46163
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+++ b/Assignment3/Raul Ortega Gonzalez - u120175/Task07.java	
@@ -0,0 +1,66 @@
+package semanticweb.assignment3;
+
+import java.io.InputStream;
+
+import org.apache.jena.ontology.Individual;
+import org.apache.jena.ontology.OntClass;
+import org.apache.jena.ontology.OntModel;
+import org.apache.jena.ontology.OntModelSpec;
+import org.apache.jena.rdf.model.ModelFactory;
+import org.apache.jena.util.FileManager;
+import org.apache.jena.util.iterator.ExtendedIterator;
+
+/**
+ * Task 07: Querying ontologies (RDFs)
+ * @author elozano
+ * @author isantana
+ *
+ */
+public class Task07
+{
+	public static String ns = "http://somewhere#";
+	
+	public static void main(String args[])
+	{
+		String filename = "resources/example6.rdf";
+		
+		// Create an empty model
+		OntModel model = ModelFactory.createOntologyModel(OntModelSpec.RDFS_MEM);
+		
+		// Use the FileManager to find the input file
+		InputStream in = FileManager.get().open(filename);
+	
+		if (in == null)
+			throw new IllegalArgumentException("File: "+filename+" not found");
+	
+		// Read the RDF/XML file
+		model.read(in, null);
+		
+		
+		// ** TASK 7.1: List all individuals of "Person" **
+		OntClass person = model.getOntClass(ns+"Person");
+		ExtendedIterator<Individual> it1 = model.listIndividuals(person);
+		while(it1.hasNext()){
+			System.out.println(it1.next());
+		}
+		
+		// ** TASK 7.2: List all subclasses of "Person" **
+		ExtendedIterator<OntClass> it2 = person.listSubClasses();
+		while(it2.hasNext()){
+			System.out.println(it2.next());
+		}
+		
+		// ** TASK 7.3: Make the necessary changes to get as well indirect instances and subclasses. TIP: you need some inference... **
+		OntModel model2 = ModelFactory.createOntologyModel(OntModelSpec.OWL_DL_MEM_RDFS_INF,model);
+		OntClass persona = model2.getOntClass(ns+"Person");
+		ExtendedIterator<Individual> it3 = model2.listIndividuals(persona);
+		ExtendedIterator<OntClass> it4 = persona.listSubClasses();
+		while(it3.hasNext()){
+			Individual inf = it3.next();
+			System.out.println(inf.getURI());
+		}
+		while(it4.hasNext()){
+			System.out.println(it4.next());
+		}
+	}
+}