Simplify the following text for a Grade 6 native English-speaking person.
Original: The line , under the running group ( Epping Ongar Railway Volunteer Society ) , reopened on Sunday 10 October 2004 , providing an hourly service between Ongar and North Weald .
Simplified: The line reopened on Sunday 10 October 2004 . It is being run by the Epping Ongar Railway Volunteer Society .