6806
To the north it transitions into the depressions , interspersed with geest ridges , between the coastal marshes of Land Wursten and the River Oste , which form the northern part of the Wesermünde Geest .
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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:
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