メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.893682586276 43.0114905481591, 142.892749471045 43.0116596496653, 142.892052491041 43.009663022518, 142.892828440498 43.0089959553981, 142.893539808376 43.0084047800967, 142.89365945265 43.0084780951844, 142.894121263524 43.0099129068485, 142.893249226466 43.0100735832372, 142.893168885849 43.0100843018575, 142.893580980379 43.0112228107888, 142.893661447634 43.0114348955262, 142.893682586276 43.0114905481591)) ^^http://www.opengis.net/ont/geosparql#wktLiteral