メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.895607205641 35.2431208782169, 136.895568484797 35.2434373072812, 136.893418765768 35.2430532180593, 136.893401780373 35.242168443884, 136.893441592647 35.2415201407262, 136.89347249717 35.2410754126195, 136.895890281809 35.2411156593435, 136.895814380252 35.2416586689149, 136.895725702774 35.2421524939293, 136.895607205641 35.2431208782169)) ^^http://www.opengis.net/ont/geosparql#wktLiteral