メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.389522813993 44.179900846846, 142.389329581405 44.1805194261719, 142.386972550889 44.1801490737262, 142.387159625275 44.1795514766036, 142.38736008573 44.1789443892314, 142.387829533568 44.1790166935662, 142.389663171906 44.1792990849593, 142.389621317263 44.179494070378, 142.389575249027 44.1797012619684, 142.389522813993 44.179900846846)) ^^http://www.opengis.net/ont/geosparql#wktLiteral