"material"=>"bronze","start_date"=>"2003","artist_name"=>"Gert Sennema","artwork_type"=>"sculpture"
"artist_name"=>"Robin de Krijger","artwork_type"=>"sculpture","material"=>"steel"
"material"=>"stone","start_date"=>"2006","artist_name"=>"JCJ Vanderheyden","artwork_type"=>"sculpture"
"material"=>"stone;iron","start_date"=>"1999","artist_name"=>"Gjalt Blaauw","artwork_type"=>"sculpture"
"material"=>"steel","start_date"=>"2019-05-28","artist_name"=>"Karel Buskes","artwork_type"=>"sculpture"