メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.360589506812 43.0487467229931, 141.360630335832 43.0491333630014, 141.360638520348 43.0491642313408, 141.360744044463 43.0495666345765, 141.359149310542 43.049923254008, 141.358955468629 43.0499721016991, 141.358483759379 43.0500908007731, 141.357729077091 43.0502808560282, 141.357082083551 43.04904897358, 141.357548598801 43.049028442807, 141.357990679229 43.0490009265299, 141.358579196762 43.048953113554, 141.360589506812 43.0487467229931)) ^^http://www.opengis.net/ont/geosparql#wktLiteral