メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.24168544451 43.1335480639683, 141.241688741491 43.1343936555531, 141.24165738702 43.1350688158778, 141.240659493073 43.1350297750243, 141.240108471458 43.135005994623, 141.239382486201 43.1349936057711, 141.239389527733 43.1346418140892, 141.239389804669 43.1345899844335, 141.23939578185 43.1335387640314, 141.239824668897 43.1335316507659, 141.239830171954 43.1331972859167, 141.239846880658 43.1323337971482, 141.24061153236 43.1323579864286, 141.240720509693 43.1323763190041, 141.240878464934 43.1324528236462, 141.241032212932 43.1325166313613, 141.241711945052 43.1321979854635, 141.241700457638 43.1331661003071, 141.24168544451 43.1335480639683)) ^^http://www.opengis.net/ont/geosparql#wktLiteral