メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.390367018862 44.1666763945332, 142.390316957258 44.1668423687626, 142.389686615038 44.1667436561348, 142.387593881268 44.1663857141122, 142.388031951585 44.1649314728804, 142.388048895278 44.164934177921, 142.390111156711 44.1652635103838, 142.390763934061 44.1653605064082, 142.390367018862 44.1666763945332)) ^^http://www.opengis.net/ont/geosparql#wktLiteral