メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.880553343191 43.8035647453736, 143.879698071363 43.8035121362353, 143.878899525155 43.8034603641715, 143.878118335647 43.8034185011201, 143.877236661105 43.8033588484968, 143.877251895863 43.8032620830056, 143.877358887847 43.8023042270758, 143.878276771086 43.8022177652065, 143.879089801728 43.8021315784105, 143.879881223073 43.8020363413534, 143.880762625995 43.8019367373939, 143.880691827905 43.8025316166921, 143.880629957894 43.8030407715586, 143.880553343191 43.8035647453736)) ^^http://www.opengis.net/ont/geosparql#wktLiteral