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Under British Rail sectorisation from the 1980s until railway privatization , Ammanford station was served by Regional Railways .
 location: Ammanford; organization: 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: Ammanford, Railways 
Answer:
 location: Ammanford; organization: Railways