"check_date:existence"=>"2021","email"=>"museumwiertsema@gmail.com","opening_hours"=>"\"Op afspraak\"","operator"=>"Stichting Historische werkplaats wijlen molenmaker Harm Wiertsema","source:date"=>"2017-05-30","start_date"=>"1999"
"museum"=>"living_history","operator"=>"Stichting Oud Brandweermateriaal Winschoten","operator:type"=>"private_non_profit","source:date"=>"2014-06-15"
"email"=>"info@slagbijheiligerlee.nl","source:date"=>"2014-06-10"
"email"=>"info@klokkengieterijmuseum.nl","source:date"=>"2014-06-10"