メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.400364516895 43.0654493831759, 141.401112924467 43.0650296514526, 141.40186692584 43.0657000679265, 141.401669518853 43.0659228172599, 141.402210691555 43.0661956975908, 141.402221454222 43.0662013325692, 141.402818240397 43.0665179450809, 141.402142087108 43.0672419084363, 141.401515576743 43.0669171951655, 141.400968036904 43.0666396930146, 141.399696676672 43.0661536312606, 141.398896557302 43.0657952627368, 141.399223873918 43.0656125165147, 141.399997550186 43.0651417797914, 141.400364516895 43.0654493831759)) ^^http://www.opengis.net/ont/geosparql#wktLiteral