PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>

SELECT DISTINCT ?x ?y
 FROM <http://dbpedia.org> 
WHERE {
  ?x rdfs:label ?y . 
  ?y bif:contains "Semantic" .
}