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Network Rail intends to replace the ATP system with ETCS – Level 2 from 2017 to 2035 along with the introduction of the new IEP trains .
 organization: Network Rail; organization: IEP
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: Network Rail, IEP 
Answer:
 organization: Network Rail; organization: IEP