Add new property + first SPARQL query

data/abox.ttl

@@ -10,6 +10,7 @@
             foaf:givenName      "Tatsumi"^^xsd:string .
 
 :Wii        rdf:type            :GameConsole .
+:Wii        :madeBy             :Nintendo .
 
 :Nintendo   rdf:type       foaf:Organization ;
             :ceo           :Kimishima ;
@@ -22,9 +23,11 @@
         :numOfSupportedControllers  8 ;
         :predecessorOfConsole       :Wii ;
         :releaseYear                2012 ;
+        :madeBy                     :Nintendo ;
         :successorOfConsole         :Switch .
 
 :Switch  rdf:type       :PortableGameConsole .
+:Switch  :madeBy        :Nintendo
 :Switch  rev:hasReview  :SwitchReviewByJPT .
 
 :JPT	rdf:type	foaf:Person ;

data/sparql.txt

@@ -0,0 +1,15 @@
+# Common prefixes across all queries
+PREFIX :	<http://example.com/ins_uebung/#>
+PREFIX rdf:	<http://www.w3.org/1999/02/22-rdf-syntax-ns#>
+PREFIX xsd:	<http://www.w3.org/2001/XMLSchema#>
+PREFIX rdfs:	<http://www.w3.org/2000/01/rdf-schema#>
+PREFIX foaf:	<http://xmlns.com/foaf/0.1/>
+PREFIX rev:	<http://purl.org/stuff/rev#>
+
+# How many consoles did nintendo produce?
+SELECT COUNT(?console) AS ?numConsoles
+WHERE {
+  ?console :madeBy ?organization .  
+}
+GROUP BY ?organization
+

data/tbox.ttl

@@ -42,6 +42,11 @@
                     rdfs:domain :GameConsole ;
                     rdfs:range  xsd:int .
 
+:madeBy             rdf:type    rdf:Property ;
+                    rdfs:domain :GameConsole ;
+                    rdfs:range  foaf:Organization .
+
+
 # rdfs:Datatype
 :PriceEur   rdf:type    rdfs:Datatype .
 :PriceEur   rdfs:label  "Preis in Euro"^^xsd:string .