252329
The film critic of Der Spiegel described the picture as " making no claim to document history truthfully " , while also quoting Walter Ulbricht , who called it " a great work of the Working Class " and a monument to Soviet-East German friendship .
 Walter Ulbricht
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Walter Ulbricht