368874
Documents Documents were issued on the basis of which the electrification of the Leningrad – Zelenogorsk line was authorized : Timeline of electrification Picture gallery File : ElectricLoco chs6-010 .
 Leningrad
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Leningrad