メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.188426280613 43.9127285594257, 144.186983970729 43.913214605682, 144.186400684361 43.9122892786505, 144.185835261942 43.9113923068634, 144.187871666545 43.9107689871497, 144.188950662937 43.9125518604389, 144.188478431507 43.9127110089022, 144.188461688373 43.9127166198837, 144.188426280613 43.9127285594257)) ^^http://www.opengis.net/ont/geosparql#wktLiteral