Question: What is the capacity of the Super League XV stadium where the only professional rugby league club in the entire south of England play ?

text: Super League XV
Teams
Super League XV was the second year of a licensed Super League . Under this system , promotion and relegation between Super League and National League One was abolished , and 14 teams were granted licences subject to certain criteria . All twelve teams from Super League XIII were given places , as well as former Super League team Salford City Reds and Crusaders . Geographically , the vast majority of teams in Super League are based in the north of England , four teams – Warrington , St. Helens , Salford and Wigan – to the west of the Pennines in Cheshire , Greater Manchester and Merseyside , and seven teams to the east in Yorkshire – Huddersfield , Bradford , Wakefield Trinity , Leeds , Castleford , Hull F.C . and Hull Kingston Rovers . Catalans Dragons are the only team based in France and are outside of the United Kingdom . Crusaders are the only team in Wales , and Harlequins are the only team to be based in a capital city ( London ) .
The 2010 Super League season (known as the Engage Super League XV for sponsorship reasons) was the 15th season of the European rugby league football competition, Super League. Fourteen teams competed for the League Leaders' Shield over 27 rounds (including the Magic Weekend at Murrayfield Stadium). All clubs also participated in the 2010 Challenge Cup tournament. The season officially kicked off on 5 February with the Crusaders versus the Leeds Rhinos on 29 January at Crusaders' new homeground at the Racecourse Ground in Wrexham. Crusaders halfback Michael Witt scored the first points of the season with a penalty goal and the Rhinos came away with the first competition points, posting a 34 to 6 victory. The season came to a conclusion with Wigan Warriors beating St. Helens 22-10 in the Super League Grand Final on 2 October with two tries for Martin Gleeson.
Team Stadium Capacity City/Area
Bradford Bulls ( 2010 season ) Grattan Stadium , Odsal 27,000 Bradford , West Yorkshire
Castleford Tigers ( 2010 season ) The Jungle 11,750 Castleford , West Yorkshire
Catalans Dragons ( 2010 season ) Stade Gilbert Brutus 10,000 Perpignan , Pyrénées-Orientales , France
Crusaders ( 2010 season ) The Racecourse Ground 15,000 Wrexham , Clwyd , Wales
Harlequins ( 2010 season ) Twickenham Stoop 12,700 Twickenham , London
Huddersfield Giants ( 2010 season ) Galpharm Stadium 24,544 Huddersfield , West Yorkshire
Hull F.C . ( 2010 season ) Kingston Communications Stadium 25,404 Kingston upon Hull , East Riding of Yorkshire
Hull Kingston Rovers ( 2010 season ) New Craven Park 9,471 Kingston upon Hull , East Riding of Yorkshire
Leeds Rhinos ( 2010 season ) Headingley Carnegie Stadium 22,250 Leeds , West Yorkshire
Salford City Reds ( 2010 season ) The Willows 11,363 Salford , Greater Manchester
St Helens R.F.C . ( 2010 season ) The GPW Recruitment Stadium 17,500 St Helens , Merseyside
Wakefield Trinity Wildcats ( 2010 season ) Belle Vue 12,600 Wakefield , West Yorkshire
Warrington Wolves ( 2010 season ) Halliwell Jones Stadium 14,206 Warrington , Cheshire
Wigan Warriors ( 2010 season ) DW Stadium 25,138 Wigan , Greater Manchester