メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.548970286399 43.2462453996158, 143.547811817288 43.2462926862357, 143.547725149191 43.2452478011196, 143.548896928325 43.2451894629122, 143.548970286399 43.2462453996158)) ^^http://www.opengis.net/ont/geosparql#wktLiteral