public String getTooltipExtraText(Province current) {
        if (!editor.Main.map.isLand(current.getId()))
            return "";
        
        final String owner = mapPanel.getModel().getHistString(current.getId(), "owner");
        if (owner == null || owner.length() == 0)
            return "";
        return "Owned by: " + Text.getText(owner);
    }