メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.921678837577 34.9063647494007, 136.922697531235 34.906377281383, 136.92276659384 34.9071972840409, 136.922839415001 34.908062510214, 136.922843272834 34.9080882942806, 136.922856089482 34.9087228159261, 136.922822839349 34.9087211997853, 136.921792753428 34.9087972429587, 136.921760963499 34.9087998558846, 136.920658090969 34.9088958932099, 136.920655557381 34.9088344028307, 136.920646624721 34.907529406311, 136.920662343593 34.9074456983851, 136.920677059201 34.9062030781815, 136.920990187178 34.9062552612126, 136.921678837577 34.9063647494007)) ^^http://www.opengis.net/ont/geosparql#wktLiteral