メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.878899525155 43.8034603641715, 143.879698071363 43.8035121362353, 143.880553343191 43.8035647453736, 143.880481975594 43.8040959745299, 143.880422843843 43.8046629992935, 143.878778038258 43.804562723505, 143.878632139113 43.8045533254049, 143.877093295501 43.8044503368448, 143.877164074141 43.803882042536, 143.877236325549 43.8033607695748, 143.877236661105 43.8033588484968, 143.878118335647 43.8034185011201, 143.878899525155 43.8034603641715)) ^^http://www.opengis.net/ont/geosparql#wktLiteral