$result = array();
$arr    = array();
$res1 = new Literal("23");
$res2 = new Literal("The Semantic Web");
$res1->setDatatype("http://www.w3.org/2001/XMLSchema#integer");

$arr["?price"]=$res1;
$arr["?title"]=$res2;


$result["rowcount"]=2;
$result["hits"]=1;
$result["part"][]=$arr;