メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.183321741148 34.2368339855043, 135.182447538688 34.2365640276195, 135.182442426651 34.2361706872619, 135.182437329792 34.2350017216531, 135.18315192247 34.2351390448337, 135.183234320564 34.2359346580788, 135.183321741148 34.2368339855043)) ^^http://www.opengis.net/ont/geosparql#wktLiteral