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BERLIN, GERMANY - JULY 05: King Willem-Alexander and Queen Maxima of the Netherlands arrive at Castle Bellevue on July 05, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

BERLIN, GERMANY - JULY 05: King Willem-Alexander and Queen Maxima of the Netherlands arrive at Castle Bellevue on July 05, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

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BERLIN, GERMANY - JULY 05: King Willem-Alexander and Queen Maxima of the Netherlands arrive at Castle Bellevue on July 05, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

BERLIN, GERMANY - JULY 05: King Willem-Alexander and Queen Maxima of the Netherlands arrive at Castle Bellevue on July 05, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

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BERLIN, GERMANY - JULY 05: German President Frank-Walter Steinmeier welcomes King Willem-Alexander and Queen Maxima of the Netherlands at Castle Bellevue on July 05, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

BERLIN, GERMANY - JULY 05: German President Frank-Walter Steinmeier welcomes King Willem-Alexander and Queen Maxima of the Netherlands at Castle Bellevue on July 05, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

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BERLIN, GERMANY - JULY 05: King Willem-Alexander and Queen Maxima of the Netherlands arrive at Castle Bellevue on July 05, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

BERLIN, GERMANY - JULY 05: King Willem-Alexander and Queen Maxima of the Netherlands arrive at Castle Bellevue on July 05, 2021 in Berlin, Germany. Their Royal Highnesses are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Sean Gallup/Getty Images)

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BERLIN, GERMANY - JULY 05: German President Frank-Walter Steinmeier welcomes King Willem-Alexander of The Netherlands and Queen Maxima of the Netherlands (not pictured) at Castle Bellevue on July 5, 2021 in Berlin, Germany. Their Majesties are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Patrick van Katwijk/Getty Images)

BERLIN, GERMANY - JULY 05: German President Frank-Walter Steinmeier welcomes King Willem-Alexander of The Netherlands and Queen Maxima of the Netherlands  (not pictured) at Castle Bellevue on July 5, 2021 in Berlin, Germany. Their Majesties are paying their first official visit since the global health crisis began over a year ago, with a state visit to Germany from July 5-7. (Photo by Patrick van Katwijk/Getty Images)