Wordnet Planets SPARQL using SPARQL 1.1

PREFIX rdfs:    <http://www.w3.org/2000/01/rdf-schema#>
PREFIX wn:  <http://www.w3.org/2006/03/wn/wn20/schema/>

SELECT DISTINCT ?label WHERE
{
 SERVICE <http://wordnet.rkbexplorer.com/sparql/>
 {
   ?s1 wn:memberMeronymOf <http://wordnet.rkbexplorer.com/id/synset-solar_system-noun-1> .
   ?s1 rdfs:label ?label.
 }
 MINUS
 {
  SERVICE <http://wordnet.rkbexplorer.com/sparql/>
  {
    ?s2 wn:hyponymOf <http://wordnet.rkbexplorer.com/id/synset-Roman_deity-noun-1> .
    ?s2 rdfs:label ?label.
  }
 }
 BIND(URI(CONCAT("http://dbpedia.org/resource/", ?label)) AS ?dbpResource)
 FILTER(EXISTS
 {
   SERVICE <http://dbpedia.org/sparql>
   {
     ?dbpResource a <http://dbpedia.org/ontology/Planet> .
   }
 })
}