select distinct ?r ?reqProp1
where  {
  {
    ?r <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#to> ?v1 .
    ?v1 <http://www.semanticdesktop.org/ontologies/2007/03/22/nco#hasEmailAddress> ?v2 .
    ?v2 <http://www.semanticdesktop.org/ontologies/2007/03/22/nco#emailAddress> "vkrause@kde.org"^^<http://www.w3.org/2001/XMLSchema#string> .
    ?r a ?v3 .
    ?v3 <http://www.w3.org/2000/01/rdf-schema#subClassOf> <http://www.semanticdesktop.org/ontologies/2007/03/22/nmo#Email> .
  } .
  ?r <http://akonadi-project.org/ontologies/aneo#akonadiItemId> ?reqProp1 .
}
