"material"=>"granite","start_date"=>"1986","artist_name"=>"Henk Oddens","artwork_type"=>"sculpture"
"material"=>"metal","start_date"=>"1992","artist_name"=>"Huib Benschop","artwork_type"=>"sculpture"
"material"=>"bronze","start_date"=>"1982","artist_name"=>"Jos Blersch","artwork_type"=>"sculpture"