"email"=>"rondleiding@ijssellinie.nl","operator"=>"Stichting De IJssellinie","opening_hours:url"=>"www.ijssellinie.nl"
"email"=>"rondleiding@ijssellinie.nl","operator"=>"Stichting De IJssellinie","source:date"=>"2014-03-24","opening_hours:url"=>"www.ijssellinie.nl"