1840
The landscapes of the Harz are characterised by steep mountain ridges , stone runs , relatively flat plateaus with many raised bogs and long , narrow V-shaped valleys , of which the Bode Gorge , the Oker and Selke valleys are the best known .
 location: Harz; location: Bode Gorge; location: Oker; location: Selke
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Harz; location: Bode Gorge; location: Oker; location: Selke