* @param prefix {The map where the keys are the prefix label and the value the IRI of the prefix on the form: http://www.w3.org/2000/01/rdf-schema#.}
*/
public RunSingleSPARQL(OWLOntology owl, HashMap<String,String> prefix){
this.owlmodel = owl;
JenaToOwlConvert j2o = new JenaToOwlConvert();
this.jenamodel = j2o.ModelOwlToJenaConvert(owlmodel,"RDF/XML");
Iterator<String> keys = prefix.keySet().iterator();
this.sparqlprefix = new HashMap();
while(keys.hasNext()){
String key = keys.next();
String pre = prefix.get(key);