171274
London Midland and Scottish Railway Sentinels 7160 – 3 , later renumbered 7180 – 3 and by British Railways 47180 – 3 was a class of small vertical boilered chain-driven shunting locomotives .
 organization: London Midland and Scottish Railway; 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: London Midland and Scottish Railway, British Railways 
Answer:
 organization: London Midland and Scottish Railway; organization: British Railways