Add default for ACL

src/SQL2Linked/Implementations/ResourceStructuralData.cs

-using Coscine.Database.DataModel;
+using Coscine.Database.DataModel;
 using Coscine.Database.Models;
 using VDS.RDF;
 using VDS.RDF.Query;
@@ -145,6 +145,9 @@ namespace SQL2Linked.Implementations
                         AssertToGraphBlankAndUriNode(graph, blankNode, acl + "accessTo", resourceGraphName);
                         Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{blankNode} {acl}accessTo {resourceGraphName}'. ");
 
+                        AssertToGraphBlankAndUriNode(graph, blankNode, acl + "default", resourceGraphName);
+                        Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{blankNode} {acl}default {resourceGraphName}'. ");
+
                         AssertToGraphBlankAndUriNode(graph, blankNode, acl + "mode", acl + "Control");
                         Console.WriteLine($"For resource '{entry.DisplayName}' will migrate triple '{blankNode} {acl}accessTo {acl}Control'. ");
                     }