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WEIMAR, GERMANY - FEBRUARY 08 : Queen Maxima of The Netherlands visits the Event High Tech Systems and Materials at he Leibniz Insitut fur Photonosche Technologies Jena during their 4 day visit to Germany on February 08, 2017 in Weimar, Germany. (Photo by Patrick van Katwijk/Getty Images)

WEIMAR, GERMANY - FEBRUARY 08 : Queen Maxima of The Netherlands visits the Event High Tech Systems and Materials at he Leibniz Insitut fur Photonosche Technologies Jena during their 4 day visit to Germany on February 08, 2017 in Weimar, Germany. (Photo by Patrick van Katwijk/Getty Images)