メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.268876939144 37.0216325031176, 138.266731561561 37.0222028395189, 138.266732791842 37.021799499563, 138.266732177196 37.0213171681092, 138.266703891282 37.0206238484759, 138.266832218232 37.0201241659358, 138.266822732547 37.0194560916434, 138.266853737762 37.0192502260395, 138.268540730706 37.0192971968959, 138.268551283926 37.0201254419588, 138.268876939144 37.0216325031176)) ^^http://www.opengis.net/ont/geosparql#wktLiteral