Slice(Project(OrderBy(BGP( ?person <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://xmlns.com/foaf/0.1/Person> .
                           ?person <http://xmlns.com/foaf/0.1/name> ?name), (?name)),
              {?name}),
      0,
      20)