Complex sentence: Charles Airport, formerly known as Melville Hall Airport, is an airport located on the northeast coast of Dominica, northwest of Marigot, it is about one hour away from the second largest city Portsmouth.
Split into simpler sentences: Charles Airport, formerly known as Melville Hall Airport, is an airport located on the northeast coast of Dominica, northwest of Marigot. It is about one hour away from the second largest city Portsmouth.