Complex sentence: According to legend King Sverre I of Norway ordered the construction of a wooden castle in the ness in the entrance to the harbour, a part of Kopervik is therefore called Treborg literally meaning "wooden castle".
Split into simpler sentences: According to legend, King Sverre I of Norway ordered the construction of a wooden castle in the ness in the entrance to the harbour. A part of Kopervik is therefore called Treborg, literally meaning "wooden castle".