"material"=>"steel","start_date"=>"2011","artist_name"=>"Henk Rusman","artwork_type"=>"sculpture"
"material"=>"aluminium","start_date"=>"2003","artist_name"=>"Henk de Boer","artwork_type"=>"sculpture"
"material"=>"concrete","artist_name"=>"Jaap van der Meij","artwork_type"=>"sculpture"
"alt_name:nl"=>"Elfstedenrijder","artist_name"=>"Auke Hettema","artwork_type"=>"statue","material"=>"bronze;stone","start_date"=>"1966","wikidata"=>"Q21145594"
"artist_name"=>"Ids Willemsma","artwork_subject"=>"sport","artwork_type"=>"sculpture","material"=>"steel","start_date"=>"2018"