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Crown Prince Haakon & Crown Princess Mette-Marit Of Norway'S Three-Day Visit To Poland.Norwegian-Polish Conference At The Radisson Sas Centrum Hotel In Warsaw. (Photo by Julian Parker/UK Press via Getty Images)

Crown Prince Haakon & Crown Princess Mette-Marit Of Norway'S Three-Day Visit To Poland.Norwegian-Polish Conference At The Radisson Sas Centrum Hotel In Warsaw. (Photo by Julian Parker/UK Press via Getty Images)

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Crown Prince Haakon & Crown Princess Mette-Marit Of Norway'S Three-Day Visit To Poland.Norwegian-Polish Conference At The Radisson Sas Centrum Hotel In Warsaw. (Photo by Julian Parker/UK Press via Getty Images)

Crown Prince Haakon & Crown Princess Mette-Marit Of Norway'S Three-Day Visit To Poland.Norwegian-Polish Conference At The Radisson Sas Centrum Hotel In Warsaw. (Photo by Julian Parker/UK Press via Getty Images)

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Crown Prince Haakon & Crown Princess Mette-Marit Of Norway'S Three-Day Visit To Poland.Norwegian-Polish Conference At The Radisson Sas Centrum Hotel In Warsaw. (Photo by Julian Parker/UK Press via Getty Images)

Crown Prince Haakon & Crown Princess Mette-Marit Of Norway'S Three-Day Visit To Poland.Norwegian-Polish Conference At The Radisson Sas Centrum Hotel In Warsaw. (Photo by Julian Parker/UK Press via Getty Images)