メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.851128445106 43.3409644512566, 141.849345058335 43.3412486018341, 141.848812607733 43.3413347864647, 141.846491212381 43.3417032967966, 141.845970611144 43.3399831731731, 141.847247641321 43.3397779581381, 141.848310147777 43.3396181829381, 141.849397040806 43.3394442766983, 141.849587116595 43.3394165294004, 141.849879574125 43.3393678315759, 141.850181740577 43.3393226830247, 141.850644811321 43.3392425093023, 141.850790999057 43.3397939574466, 141.85094043943 43.3403122918626, 141.851011369274 43.3405584003626, 141.851128445106 43.3409644512566)) ^^http://www.opengis.net/ont/geosparql#wktLiteral