メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.045335228581 39.3909056285808, 140.045441869503 39.391632965804, 140.04499627977 39.3916674386848, 140.044901880808 39.3909403474748, 140.044953081556 39.3909363304765, 140.044941816336 39.3907944539808, 140.044870862992 39.3902388771103, 140.04525874584 39.3902019919063, 140.045343174752 39.3908595532701, 140.045328652501 39.3908607693066, 140.045335228581 39.3909056285808)) ^^http://www.opengis.net/ont/geosparql#wktLiteral