PIJNACKER, NETHERLANDS - MARCH 10: King Willem-alexander of The Netherlands volunteers during the NL Doet at residential care centre 't Hofland in Pijnacker on March 10, 2018 in Pijnacker, Netherlands. (Photo by Patrick van Katwijk/Getty Images)
PIJNACKER, NETHERLANDS - MARCH 10: King Willem-alexander of The Netherlands volunteers during the NL Doet at residential care centre 't Hofland in Pijnacker on March 10, 2018 in Pijnacker, Netherlands. (Photo by Patrick van Katwijk/Getty Images)