code: @Override
      public org.openrdf.model.Statement createDataProperty(QualifiedName subject, 
                                              QualifiedName pred,
  					    LiteralImpl literalImpl) {
  	return createDataProperty(qualifiedNameToResource(subject), pred, literalImpl);
      }
docs: /* (non-Javadoc)
  @see org.openprovenance.prov.rdf.GraphBuilder#createDataProperty(org.openprovenance.prov.model.QualifiedName, org.openprovenance.prov.model.QualifiedName, java.lang.Object)