public static String lookup(String number) { String participant = "";
public static Person lookup(String number) { Person newPerson;
	public static String lookup(String number) {		String participant = "";		if (numberIsMobile(number)) {			participant = "? (Mobil)";		} else if (numberIsFreecall(number)) {			participant = "? (Freecall)";		} else {			participant = lookupDasOertliche(number);			if (participant.equals("")) {				participant = "?";			}		}		return participant;	}