メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.323464683006 43.0547804427928, 141.32345334378 43.0548265570878, 141.323428828957 43.0549259445957, 141.323328980546 43.0553657477575, 141.322952857208 43.0553152899805, 141.322920003365 43.0553108826989, 141.322677402461 43.0552764245839, 141.322631312755 43.0552704731648, 141.322260738085 43.0552226183328, 141.32196929986 43.0551832606134, 141.322054210788 43.0548251309923, 141.32210288604 43.0546438665187, 141.322223858527 43.0541201208805, 141.322597291285 43.0541698623078, 141.322885607898 43.0542082640136, 141.323585066153 43.0543015618439, 141.323516512368 43.0545740944206, 141.323464683006 43.0547804427928)) ^^http://www.opengis.net/ont/geosparql#wktLiteral