メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.348748996934 37.2574480141197, 140.34845603576 37.2571279752519, 140.34752135538 37.2561069853556, 140.346760177723 37.2552702505468, 140.345879853408 37.2543608059996, 140.347281307618 37.2537989778962, 140.347905508697 37.2545363340582, 140.348709830464 37.2554479209492, 140.349897962523 37.2568254381804, 140.348748996934 37.2574480141197)) ^^http://www.opengis.net/ont/geosparql#wktLiteral