メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.011715303513 34.8831619390608, 137.011306413221 34.8839324196197, 137.011194869028 34.8841177918529, 137.010998643827 34.8845138529642, 137.010169336996 34.8842887580744, 137.00953113028 34.8841179934957, 137.009281377022 34.8840416026638, 137.009185672942 34.8840143620206, 137.009514750883 34.8831313146353, 137.009715385347 34.8825913018574, 137.009779496644 34.8826294862564, 137.011715303513 34.8831619390608)) ^^http://www.opengis.net/ont/geosparql#wktLiteral