メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.954270674826 43.5506569988794, 144.954149509203 43.5506629973563, 144.953402592941 43.5501283568489, 144.953583359014 43.5499679016056, 144.953262871519 43.5497412549625, 144.953876153431 43.549230152764, 144.953879934092 43.5492325600977, 144.954243476126 43.549462018435, 144.954822693136 43.5497709272431, 144.95503703212 43.5498939377891, 144.955148963994 43.549958125331, 144.954270674826 43.5506569988794)) ^^http://www.opengis.net/ont/geosparql#wktLiteral