2040
In the summer they visited his grandfather at the Hindenburg estate of Neudeck in East Prussia .
 location: Hindenburg; location: Neudeck; location: East Prussia
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: Hindenburg; location: Neudeck; location: East Prussia