implementation of comments

src/SQL2Linked/Implementations/ProjectStructuralData.cs

@@ -90,7 +90,7 @@ namespace SQL2Linked.Implementations
                     }
                 }
 
-                AssertToGraphLiteralNode(graph, projectGraphName, cosc + "terms/project#deleted", entry.Deleted.ToString());
+                AssertToGraphLiteralNode(graph, projectGraphName, cosc + "terms/project#deleted", entry.Deleted.ToString(), new Uri("http://www.w3.org/2001/XMLSchema#boolean"));
                 Console.WriteLine($"For project '{entry.DisplayName}' will migrate triple '{projectGraphName} {cosc}terms/project#deleted {entry.Deleted}'. ");
 
                 AssertToGraphLiteralNode(graph, projectGraphName, cosc + "terms/project#slug", entry.Slug);

src/SQL2Linked/StructuralData.cs

@@ -20,7 +20,7 @@ namespace SQL2Linked
             RdfStoreConnector = new RdfStoreConnector(Configuration.GetStringAndWait("coscine/local/virtuoso/additional/url"));
             Model = new T();
             Prefix = Configuration.GetStringAndWait("coscine/global/epic/prefix");
-            QueryEndpoint = new SparqlRemoteEndpoint(new Uri(string.Format("http://localhost:8890/sparql")));
+            QueryEndpoint = new SparqlRemoteEndpoint(new Uri(Configuration.GetStringAndWait("coscine/local/virtuoso/additional/url")));
         }
 
         public abstract IEnumerable<IGraph> ConvertToLinkedData(IEnumerable<S> entries);