メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.314698334018 43.0659401610442, 141.313784776594 43.0664190134716, 141.313109560791 43.0667665371151, 141.312345602917 43.0671836593333, 141.311742458759 43.0675153789743, 141.311093032093 43.0678875068389, 141.310146345449 43.0670659596077, 141.310970171217 43.0666425918206, 141.311443645633 43.0664037720061, 141.311483863002 43.0663832143306, 141.312338003411 43.0659458791169, 141.312907658219 43.0656641668178, 141.312911231808 43.0656625081924, 141.313510946345 43.065352907516, 141.313986824189 43.0651124089347, 141.314126572321 43.0650499045442, 141.314698334018 43.0659401610442)) ^^http://www.opengis.net/ont/geosparql#wktLiteral