"information"=>"office","source:date"=>"2014-06-23"
"board_type"=>"nature;history","information"=>"map;board","map_size"=>"site"
"board_type"=>"wildlife","information"=>"board"
"board_type"=>"nature","information"=>"board","operator"=>"Staatsbosbeheer","subject:wikidata"=>"Q941999"