118808
Design work began in 1946 and development continued after the nationalisation of the railways in 1948 , under the auspices of British Railways ( BR ) .
 organization: British Railways
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: British Railways 
Answer:
 organization: British Railways