メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.726509795055 35.2383614053762, 136.723602008282 35.2386276114394, 136.723481485404 35.237790665196, 136.723459230081 35.2376288885044, 136.72322943547 35.2376470063696, 136.723152393163 35.2375608808962, 136.725769382563 35.2373810399218, 136.726163199654 35.2373485737874, 136.72628319907 35.2380326939529, 136.726509795055 35.2383614053762)) ^^http://www.opengis.net/ont/geosparql#wktLiteral