Museum of Contemporary Arts MAC's director Laurent Busine (L) escorts Belgian Queen Mathilde during a visit to the "La Salle de Pendus" exhibition by Christian Boltanski at the MAC's in Hornu on July 15, 2015. AFP PHOTO / BELGA / LAURIE DIEFFEMBACQ == BELGIUM OUT == RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION == (Photo credit should read LAURIE DIEFFEMBACQ/AFP/Getty Images)
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