Simplify the following text for a Grade 11 native English-speaking person.
Original: Kurt Steven Angle ( born December 9 , 1968 ) , is an American professional wrestler currently under contract in Total Nonstop Action Wrestling where he is a former TNA World Champion .
Simplified: Kurt Steven Angle ( born December 9 , 1968 ) is an American professional wrestler , actor and 1996 Olympic gold medalist . He is currently under contract with Total Nonstop Action Wrestling , where he is a former four-time TNA World Heavyweight Champion , and recognized by the promotion as a 14-time World Champion .