context: Train operator Virgin Trains East Coast provides a half-hourly frequency of trains to London King's Cross, with a journey time of about three hours, these services call at Durham, Darlington, York, Doncaster, Newark North Gate and Peterborough and north to Scotland with all trains calling at Edinburgh and a small number of trains extended to Glasgow, Aberdeen and Inverness. CrossCountry trains serve destinations in Yorkshire, the Midlands and the South West. First TransPennine Express operates services to Manchester and Liverpool. Northern Rail provides local and regional services.
question: Which train company provides local and regional services?
answers: Northern Rail Northern Rail Northern Rail