メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.373912680032 43.0817549869247, 141.374608724925 43.0818461809107, 141.374357790514 43.082917481656, 141.373642700578 43.0828221307576, 141.372746866045 43.0826984548313, 141.372811393214 43.0823794458876, 141.372866783478 43.0821223256228, 141.372986830441 43.0816310131565, 141.373048061887 43.0816365457641, 141.373465012568 43.08169290621, 141.373814832885 43.0817401725268, 141.373912680032 43.0817549869247)) ^^http://www.opengis.net/ont/geosparql#wktLiteral