1302
He attended the Sheffield Peace Congress in Warsaw in 1950 and then embarked on a brief tour of Moscow and Leningrad , which resulted in the cancellation of his passport .
 location: Moscow; location: Leningrad
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: Moscow; location: Leningrad