"material"=>"bronze","start_date"=>"1978","artist_name"=>"Ineke van Dijk","artwork_type"=>"statue"
"material"=>"bronze","start_date"=>"1982","artist_name"=>"Jan Vermaat","artwork_type"=>"statue"
"material"=>"bronze","start_date"=>"1970","artist_name"=>"José Pirkner","artwork_type"=>"statue"
"material"=>"concrete;copper","start_date"=>"1992-12","artist_name"=>"Puck Sluijs","artwork_type"=>"sculpture","artwork_subject"=>"Marks former border Zuid-Holland and Utrecht, border Linschoten and Woerden"