メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((129.617218917548 33.3041663792685, 129.616614826031 33.3039641230044, 129.616630563849 33.3039156751018, 129.616608827511 33.303846623275, 129.616910070324 33.3032070717317, 129.617317326032 33.3033558647415, 129.617257807368 33.3034895932783, 129.61751661278 33.3035729020474, 129.617218917548 33.3041663792685)) ^^http://www.opengis.net/ont/geosparql#wktLiteral