4820
It was constructed by the North London Railway as its city branch to allow its passenger trains to reach the City of London .
 organization: North London Railway; organization: city branch; location: City of London
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:
 organization: North London Railway; organization: city branch; location: City of London