メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.281401757851 35.0773311534528, 136.281450195168 35.0773970318601, 136.281747285438 35.0781049995303, 136.28122819551 35.0782558723951, 136.280899130874 35.0775963639752, 136.280915507008 35.0775811834031, 136.281241443621 35.0774415368438, 136.281401757851 35.0773311534528)) ^^http://www.opengis.net/ont/geosparql#wktLiteral