Complex sentence: In 1940-50 approximately 30 people made a living on the island and by late 1960 only two ladies remained on the island the two residents that live on the island are not original residents.
Split into simpler sentences: In 1940-50 approximately 30 people made a living on the island and by late 1960 only two ladies remained on the island. The two residents that live on the island are not original residents.