Complex sentence: The well known Elm Tree House which was used in Tracy Beaker Returns and series 1 of The Dumping Ground has not been used and it is unknown wheather the new house will still be called Elm Tree House or something new.
Split into simpler sentences: The well known Elm Tree House which was used in Tracy Beaker Returns and series 1 of The Dumping Ground. It has not been used in the second series and it is unknown wheather the new house will still be called Elm Tree House or something new.