メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.320030446825 43.0897424560429, 141.319884241367 43.0898276203541, 141.319175162301 43.0902419249764, 141.318850994464 43.0904330413371, 141.318686916246 43.0905271417064, 141.318584713816 43.0905590823765, 141.318538698669 43.0905877537018, 141.318341300131 43.0903350720294, 141.318484360491 43.0893609903638, 141.318842113969 43.0891378670698, 141.319334519257 43.0888497299589, 141.319742978975 43.0885981819488, 141.320172139938 43.0889951601893, 141.320611296796 43.0894041043067, 141.320030446825 43.0897424560429)) ^^http://www.opengis.net/ont/geosparql#wktLiteral