diff --git a/Assignment3/GuillermoDiaz.txt b/Assignment3/GuillermoDiaz.txt
new file mode 100644
index 0000000..18404e0
--- /dev/null
+++ b/Assignment3/GuillermoDiaz.txt
@@ -0,0 +1,47 @@
+
+#1
+
+select distinct ?prop
+where {
+?politician rdf:type <http://dbpedia.org/ontology/Politician>.
+?politician ?prop ?values
+
+}
+ LIMIT 100
+
+#2
+
+select distinct ?prop
+where {
+?politician rdf:type <http://dbpedia.org/ontology/Politician>.
+?politician ?prop ?values.
+FILTER(?prop != rdf:type)
+}
+ LIMIT 100
+
+#3
+select distinct ?values
+where {
+?politician rdf:type <http://dbpedia.org/ontology/Politician>.
+?politician ?prop ?values.
+FILTER(?prop != rdf:type)
+}
+ LIMIT 100
+
+ #4
+ select distinct ?prop ?values
+where {
+?politician rdf:type <http://dbpedia.org/ontology/Politician>.
+?politician ?prop ?values.
+FILTER(?prop != rdf:type)
+}
+ LIMIT 100
+
+#5
+select distinct ?prop COUNT(?values)
+where {
+?politician rdf:type <http://dbpedia.org/ontology/Politician>.
+?politician ?prop ?values.
+FILTER(?prop != rdf:type)
+}
+ LIMIT 100
\ No newline at end of file
diff --git a/Assignment4/gdiazbenito-20c018/task06.py b/Assignment4/gdiazbenito-20c018/task06.py
new file mode 100644
index 0000000..bc89bee
--- /dev/null
+++ b/Assignment4/gdiazbenito-20c018/task06.py
@@ -0,0 +1,71 @@
+# -*- coding: utf-8 -*-
+"""Task06.ipynb
+
+Automatically generated by Colaboratory.
+
+Original file is located at
+    https://colab.research.google.com/drive/1hSv61ejXESrp34CUz1PqZCsoA43tzc8y
+
+**Task 06: Modifying RDF(s)**
+"""
+
+#pip install rdflib
+github_storage = "https://raw.githubusercontent.com/FacultadInformatica-LinkedData/Curso2020-2021/master/Assignment4"
+
+"""Leemos el fichero RDF de la forma que lo hemos venido haciendo"""
+
+from rdflib import Graph, Namespace, Literal, XSD
+from rdflib.namespace import RDF, RDFS
+
+with open('example5.rdf', 'r') as f:
+  g = Graph()
+  g.namespace_manager.bind('ns', Namespace("http://somewhere#"), override=False)
+  g.namespace_manager.bind('vcard', Namespace("http://www.w3.org/2001/vcard-rdf/3.0#"), override=False)
+  g.parse(f, format="xml")
+
+"""Create a new class named Researcher"""
+
+ns = Namespace("http://somewhere#")
+g.add((ns.Researcher, RDF.type, RDFS.Class))
+#for s, p, o in g:
+#  print(s,p,o)
+
+"""**TASK 6.1: Create a new class named "University"**
+
+**TASK 6.2: Add "Researcher" as a subclass of "Person"**
+
+**TASK 6.3: Create a new individual of Researcher named "Jane Smith"**
+
+**TASK 6.4: Add to the individual JaneSmith the fullName, given and family names**
+
+**TASK 6.5: Add UPM as the university where John Smith works**
+"""
+
+"TASK 6.1:"
+g.add((ns.University, RDF.type, RDFS.Class))
+#for s,p,o in g:
+ # print(s,p,o)
+
+"TASK 6.2:"
+g.add((ns.Researcher, RDFS.subClassOf, ns.Person))
+#for s,p,o in g:
+  #print(s,p,o)
+
+"TASK 6.3:"
+g.add((ns.JaneSmith,RDF.type,ns.Researcher))
+#for s,p,o in g:
+  #print(s,p,o)
+
+"TASK 6.4:"
+VCARD = Namespace("http://www.w3.org/2001/vcard-rdf/3.0#")
+g.add((ns.JaneSmith, VCARD.FN, Literal('Jane Smith', datatype=XSD.string)))
+g.add((ns.JaneSmith, VCARD.Family, Literal('Smith', datatype=XSD.string)))
+g.add((ns.JaneSmith, VCARD.Given, Literal('Jane', datatype=XSD.string)))
+#for s,p,o in g:
+  #print(s,p,o)
+
+"TASK 6.5:"
+g.add((ns.UPM, RDF.type, ns.University))
+g.add((ns.JohnSmith, VCARD.Works, ns.UPM))
+for s,p,o in g:
+  print(s,p,o)
\ No newline at end of file
diff --git a/Assignment4/gdiazbenito-20c018/task07.py b/Assignment4/gdiazbenito-20c018/task07.py
new file mode 100644
index 0000000..c734928
--- /dev/null
+++ b/Assignment4/gdiazbenito-20c018/task07.py
@@ -0,0 +1,84 @@
+# -*- coding: utf-8 -*-
+"""Task07.ipynb
+
+Automatically generated by Colaboratory.
+
+Original file is located at
+    https://colab.research.google.com/drive/1tV5j-DRcpPtoJGoMj8v2DSqR_9wyXeiE
+
+**Task 07: Querying RDF(s)**
+"""
+
+#pip install rdflib
+github_storage = "https://raw.githubusercontent.com/FacultadInformatica-LinkedData/Curso2020-2021/master/Assignment4"
+
+"""Leemos el fichero RDF de la forma que lo hemos venido haciendo"""
+
+from rdflib import Graph, Namespace, Literal
+from rdflib.namespace import RDF, RDFS
+from rdflib.plugins.sparql import prepareQuery
+
+with open('../python/example6.rdf', 'r') as f:
+  g = Graph()
+  g.namespace_manager.bind('ns', Namespace("http://somewhere#"), override=False)
+  g.namespace_manager.bind('vcard', Namespace("http://www.w3.org/2001/vcard-rdf/3.0#"), override=False)
+  g.parse(f, format="xml")
+"""**TASK 7.1: List all subclasses of "Person" with RDFLib and SPARQL**
+
+**TASK 7.2: List all individuals of "Person" with RDFLib and SPARQL (remember the subClasses)**
+
+**TASK 7.3: List all individuals of "Person" and all their properties including their class with RDFLib and SPARQL**
+"""
+
+"TASK 7.1:"
+ns = Namespace("http://somewhere#")
+#Con RDFLib
+for s,p,o in g.triples((None, RDFS.subClassOf, ns.Person)):
+    print(s,p,o)
+#Con SPRQL
+q1 = prepareQuery('''
+  SELECT 
+    ?Subclass
+  WHERE { 
+    ?Subclass RDFS:subClassOf ns:Person.
+  }
+  ''',
+  initNs={"RDFS": RDFS, "ns": ns}
+)
+for r in g.query(q1):
+  print(r.Subclass)
+
+
+"TASK 7.2:"
+#Con RDFLib
+for s,p,o in g.triples((None, RDF.type , ns.Person)):
+    print(s,p,o)
+for s,p,o in g.triples((None, RDFS.subClassOf, ns.Person)):
+    for s2,p2,o2 in g.triples((None,RDF.type,s)):
+        print(s2,p2,o2)
+#Con SPRQL
+q1= prepareQuery('''
+  SELECT 
+    ?Persons
+  WHERE { 
+    ?Persons RDF:type ns:Person.
+  }
+  ''',
+  initNs={"RDF": RDF, "ns": ns}
+)
+#subclases
+q2 = prepareQuery('''
+  SELECT 
+    ?Persons
+  WHERE { 
+    ?Subclass RDFS:subClassOf ns:Person.
+    ?Persons RDF:type ns:Person.
+  }
+  ''',
+  initNs={"RDFS": RDFS, "ns": ns, "RDF":RDF}
+)
+for r in g.query(q1):
+  print(r.Persons)
+
+for r in g.query(q2):
+  print(r.Persons)
\ No newline at end of file