"source:date"=>"2014-03-24"
"horse"=>"yes","map_size"=>"region","map_type"=>"street","description"=>"Knooppuntnetwerk","information"=>"map"
"bicycle"=>"yes","hiking"=>"yes","horse"=>"yes","information"=>"map"
"hiking"=>"yes","map_size"=>"region","map_type"=>"street","information"=>"map"
"bicycle"=>"yes","information"=>"map","map_size"=>"region","map_type"=>"street"