8180
After a decision was made to re-flood the depression , the mill run was closed in 1993 , the forest then began to retreat and the fens surrounding the Nietingsee to redevelop .
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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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