メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.716477211542 35.2349567347617, 136.716273047095 35.2350050708233, 136.716102561769 35.2346349855382, 136.71636398662 35.234545801385, 136.716268973027 35.2343426233905, 136.716860422814 35.2341757733824, 136.717023730856 35.2344468116614, 136.717170410615 35.234791948599, 136.716477211542 35.2349567347617)) ^^http://www.opengis.net/ont/geosparql#wktLiteral