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WITTENBERG, GERMANY - FEBRUARY 09: King Willem-Alexander (L) and Queen Maxima (2nd R) of the Netherlands visit the castle church on February 9, 2017 in Wittenberg, Germany, beside stand Reiner Haseloff, governor of Saxony-Anhalt and his wife Gabriele Haseloff. The royal couple will pay a working visiting from February 7 to 10 to the German Bundeslaender Thuringia, Saxony and Saxony-Anhalt in order to deepen trade and investment relations and promote cooperation in high-tech systems, chemicals and flood protection sectors. (Photo by Jens Schlueter/Getty Images)

WITTENBERG, GERMANY - FEBRUARY 09: King Willem-Alexander (L) and Queen Maxima (2nd R) of the Netherlands visit the castle church on February 9, 2017 in Wittenberg, Germany, beside stand Reiner Haseloff, governor of Saxony-Anhalt and his wife Gabriele Haseloff. The royal couple will pay a working visiting from February 7 to 10 to the German Bundeslaender Thuringia, Saxony and Saxony-Anhalt in order to deepen trade and investment relations and promote cooperation in high-tech systems, chemicals and flood protection sectors. (Photo by Jens Schlueter/Getty Images)