SHORT PROFILE of Jean-Pierre and Luc Dardenne as the Belgian directors vie for a third Palme d'Or at the 78th Cannes Film Festival with their film "Jeunes Mères" ("Young Mothers"). The Belgian brothers, who have already won the Palme d'Or for best film twice ("Rosetta" in 1999 and "The Child" in 2005), tell the story of five young mothers staying in a maternity home in their native Belgium. SHORT PROFILE OF THE DARDENNE BROTHERS