2732
In the north it extends outside the city limits into the Leningrad oblast ( it is the only line to stretch beyond the city boundary ) .
 location: Leningrad oblast
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: Leningrad oblast