import ch.epfl.lbd.etl.loaders.RAWGPSLoader;
public class ETLStage extends Tester {
public static void main(String[] args){
//create ETL internal stages
POILoader load_POI = new POILoader();
RAWGPSLoader load_GPS = new RAWGPSLoader();
TrajectoryExtractor extract_TRAJECTORIES = new TrajectoryExtractor();
//run stages
try{