query: What was the first race held at the Silverstone Circuit?
passage: Silverstone Circuit
Silverstone was first used for motorsport by an 'ad hoc' group of friends who set up an impromptu race in September 1947. One of their members, Maurice Geoghegan, lived in nearby Silverstone village and was aware that the airfield was deserted. He and eleven other drivers raced over a two-mile circuit, during the course of which Geoghegan himself ran over a sheep that had wandered onto the airfield. The sheep was killed and the car written off, and in the aftermath of this event the informal race became known as the Mutton Grand Prix.[8]
passage: Silverstone Circuit
On 30 September 2004 British Racing Drivers' Club president Jackie Stewart announced that the British Grand Prix would not be included on the 2005 provisional race calendar and, if it were, would probably not occur at Silverstone.[6] However, on 9 December an agreement was reached with Formula One rights holder Bernie Ecclestone ensuring that the track would host the British Grand Prix until 2009 after which Donington Park would become the new host. However, the Donington Park leaseholders suffered economic problems resulting in the BRDC signing a 17-year deal with Ecclestone to hold the British Grand Prix at Silverstone.[7]