public function getSubject($predicate, $object)
    {
        $returnValue = null;

        
		
		$sqlQuery = "SELECT subject FROM statements WHERE predicate = ? AND object= ? ";
		$dbWrapper = core_kernel_classes_DbWrapper::singleton();
		$sqlResult = $dbWrapper->query($sqlQuery, array (
			$predicate,
			$object
		));
		$returnValue = new core_kernel_classes_ContainerCollection(new common_Object(__METHOD__));
		while ($row = $sqlResult->fetch()){
			$container = new core_kernel_classes_Resource($row['subject'], __METHOD__);
			$container->debug = __METHOD__ ;
			$returnValue->add($container);
		}

        

        return $returnValue;
    }