メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.750898070214 35.4026321158149, 136.75016111197 35.4027838083498, 136.74989492749 35.4017632578496, 136.750579104309 35.40163025657, 136.750634766674 35.4017945310513, 136.750827812772 35.4024292005903, 136.750898070214 35.4026321158149)) ^^http://www.opengis.net/ont/geosparql#wktLiteral