メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.956730510516 37.7968408980773, 140.953945239794 37.7967683017999, 140.953984998815 37.7962820828975, 140.952772854037 37.7962489731392, 140.9528598101 37.7939754867233, 140.954444741801 37.7940261680433, 140.954754819162 37.7942470623783, 140.956907794847 37.7942900518152, 140.956730510516 37.7968408980773)) ^^http://www.opengis.net/ont/geosparql#wktLiteral