"source:date"=>"2014-03-24","contact:phone"=>"0031 594 21 22 47"
"name:fy"=>"Boerum","name:nl"=>"Burum","population"=>"606","postal_code"=>"9851","population:date"=>"2017-01-01","source:population"=>"https://www.kollumerland.nl/gemeente/feiten-en-cijfers_3721/item/inwonertal-en-info-2017_6145.html"