メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.961906673978 37.8017268602298, 140.957641825925 37.8016130514609, 140.953818529113 37.8015233184788, 140.953824946029 37.8012667509136, 140.953839039518 37.8001324712269, 140.953895461472 37.7990873276494, 140.956566126174 37.7991605941572, 140.962004404613 37.7992696851302, 140.961906673978 37.8017268602298)) ^^http://www.opengis.net/ont/geosparql#wktLiteral