メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.317399745926 42.2929026906124, 143.317405690879 42.2929462434509, 143.317448203248 42.2931691016065, 143.317104549249 42.2929763355409, 143.316560000676 42.2927468894593, 143.316433191949 42.2926934844547, 143.316490796403 42.2926206442502, 143.31722106458 42.2917351957872, 143.317241592792 42.291845716068, 143.317283740448 42.2920470527656, 143.317399745926 42.2929026906124)) ^^http://www.opengis.net/ont/geosparql#wktLiteral