11419
He died of heart failure nineteen hours after the conclusion of that interview , in Düsseldorf prison on 28 June 1971 .
 location: Düsseldorf
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: Düsseldorf