メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.387018734889 43.0349001007058, 141.387465734293 43.0354315789816, 141.387054441469 43.035643270262, 141.386612624613 43.0358574027653, 141.386193494495 43.0360601700846, 141.385657123365 43.0363369529485, 141.384899265639 43.0356377015903, 141.385495999872 43.035281412436, 141.38590592437 43.0350581115784, 141.385721878789 43.0348439733042, 141.38571944146 43.0346896500774, 141.385730874322 43.0342026272392, 141.38696523992 43.0342153812981, 141.386832456175 43.0346808835648, 141.387018734889 43.0349001007058)) ^^http://www.opengis.net/ont/geosparql#wktLiteral