"material"=>"stone","start_date"=>"1954","artist_name"=>"Gerrit Bolhuis","artwork_type"=>"sculpture"
"artist_name"=>"Mette Bus","artwork_type"=>"statue"
"material"=>"limestone","start_date"=>"1934","artist_name"=>"Ludwig Oswald Wenckebach","artwork_type"=>"statue"