メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.785320098273 43.2092085983011, 141.78524204012 43.2093663822913, 141.785153978397 43.2095630184332, 141.784964892796 43.2099853526049, 141.784730450504 43.210467844817, 141.783743920925 43.2100209207821, 141.782917400869 43.2096256115009, 141.783764140436 43.2086143551769, 141.784156269284 43.2081936895956, 141.785448090732 43.208816752548, 141.785385458775 43.2090134204834, 141.785320098273 43.2092085983011)) ^^http://www.opengis.net/ont/geosparql#wktLiteral