Table:
text: 2007 Preakness Stakes
Preakness Stakes feature key prep races list
Preakness Stakes feature key prep races list
Date_ Track Race Dist_ Purse_US_ Track_Surf_ Winning_horse Win_jockey
April 7 Santa Anita Park Santa Anita Derby 1⅛ Miles $750,000 Dirt Tiago Mike Smith
April 7 Hawthorne Race Course Illinois Derby 1⅛ Miles $500,000 Dirt Cowtown Cat Fernando Jara
April 14 Keeneland Race Course Blue Grass Stakes 1⅛ Miles $750,000 Dirt Dominican Rafeal Bejarano
April 14 Oaklawn Park Arkansas Derby 1⅛ Miles $1,000,000 Dirt Curlin Robby Albarado
April 21 Pimlico Race Course Federico Tesio Stakes 1⅛ Miles $125,000 Dirt Xchanger Ramon A. Dominguez
April 28 Churchill Downs Derby Trial Stakes 7½ Furlongs $100,000 Dirt Flying First Class Mark Guidry
May 5 Churchill Downs Kentucky Derby 1 1/4 Miles $11.80 Dirt Street Sense Calvin Borel

Question: What Was The Illinois Derby Purse For 2007 Preakness Stakes Feature Key Prep Races List?