"material"=>"bronze","start_date"=>"1991","artist_name"=>"Heleen Levano","artwork_type"=>"sculpture"
"material"=>"bronze","start_date"=>"1983","artist_name"=>"Jan Oosting","artwork_type"=>"statue"
"start_date"=>"1980","artist_name"=>"Jan Kip","artwork_type"=>"statue"