Complex sentence: Isabelle Demongeot (born September 18,1966 in Gassin, France) is a former professional tennis player from France, who turned professional on May 1,1983.
Split into simpler sentences: Isabelle Demongeot (born on Sep 18,1966 in Gassin, France) is a former professional tennis player from France. Demongeot turned professional on May 1,1983.