void rectangleSelectionCallback(Vector3 spherePosition1, Vector3 spherePosition2, bool finishRectangleSelection)
{
if (finishRectangleSelection)
{
List <Country> selectedCountries = map.GetVisibleCountries(spherePosition1, spherePosition2);
Debug.Log("Countries found: " + EntityListToString(selectedCountries));
List <Province> selectedProvinces = map.GetVisibleProvinces(spherePosition1, spherePosition2);
Debug.Log("Provinces found: " + EntityListToString(selectedProvinces));
List <City> selectedCities = map.GetVisibleCities(spherePosition1, spherePosition2);
Debug.Log("Cities found: " + CityListToString(selectedCities));
}
}