Table:
text: 2011 British GT season
Calendar
Calendar
Round Circuit Date_ Length_ Pole_Position GT3_Winner GT4_Winner
1 Oulton Park 25 April 60 mins No. 5 Scuderia Vittoria No. 1 Trackspeed No. 44 ABG Motorsport
1 Oulton Park 25 April 60 mins Charles Bateman Michael Lyons David Ashburn Richard Westbrook Peter Belshaw Marcus Clutton
2 Oulton Park 25 April 60 mins No. 1 Trackspeed No. 5 Scuderia Vittoria No. 42 Century Motorsport
2 Oulton Park 25 April 60 mins David Ashburn Richard Westbrook Charles Bateman Michael Lyons Jake Rattenbury Josh Wakefield
3 Snetterton 300 15 May 120 mins No. 10 CRS Racing No. 23 United Autosports No. 44 ABG Motorsport

text: 2011 British GT season
Calendar
Calendar
Round Circuit Date_ Length_ Pole_Position GT3_Winner GT4_Winner
3 Snetterton 300 15 May 120 mins Glynn Geddie Jim Geddie Matt Bell Michael Guasch Peter Belshaw Marcus Clutton
4 Brands Hatch 19 June 120 mins No. 21 MTech No. 2 Trackspeed No. 44 ABG Motorsport
4 Brands Hatch 19 June 120 mins Duncan Cameron Matt Griffin Tim Bridgman Gregor Fisken Peter Belshaw Marcus Clutton
5 Spa-Francorchamps 9 July 60 mins No. 59 McLaren GT No. 1 Trackspeed No. 50 Scuderia Vittoria
5 Spa-Francorchamps 9 July 60 mins Chris Goodwin Andrew Kirkaldy David Ashburn Richard Westbrook Dan Denis David McDonald
6 Spa-Francorchamps 9 July 60 mins No. 1 Trackspeed No. 21 MTech No. 48 Lotus Sport UK

Question: Given the 2011 British GT season, what is the length if David Ashburn is Richard Westbrook the GT3 winner and 1 is the lap?