People attend the Provenance Research Training Program to the Nazi-looted art, in Magdeburg, central Germany, Thursday, June 14, 2012. Experts from museums, auction houses, government agencies and other institutions are meeting in Germany this week as part of an international effort to train art-world professionals in issues related to recovering and restituting art and cultural treasures looted during the Nazi era. The six-day conference brings together 35 experts from more than a dozen countries. (AP Photo/Jens Meyer)