With the premise 'Long ago--or away, or whatever--there was a world called Thar?? and another called Erath.', is 'A long time ago there were two worlds called Thar and Erath.' a logical derivative?
Long ago--or away, or whatever--there was a world called Thar?? and another called Erath.###A long time ago there were two worlds called Thar and Erath.