998
On privatisation , responsibility for track , signalling and stations was transferred to Railtrack ( which was later brought under public control as Network Rail ) and that for trains to the train operating companies .
 organization: Railtrack; organization: Network Rail
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: Railtrack; organization: Network Rail