メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.882794044238 43.0178317667996, 142.881862295974 43.0186412581701, 142.881801684384 43.018693916976, 142.881370099215 43.0184289717952, 142.881103178589 43.0182619321602, 142.8811547071 43.0182163561737, 142.882074802478 43.0174010266523, 142.882657574051 43.0177680974824, 142.882672245862 43.017754865324, 142.882794044238 43.0178317667996)) ^^http://www.opengis.net/ont/geosparql#wktLiteral