メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.929758962552 35.1970259150414, 136.929752811818 35.1977237420278, 136.929077139189 35.1977162764164, 136.929072265771 35.1977104921438, 136.929123734899 35.1970673342914, 136.92915179358 35.1965980090165, 136.929138917501 35.1965783348542, 136.92976396336 35.1965110494474, 136.929759240559 35.1969961258091, 136.929758962552 35.1970259150414)) ^^http://www.opengis.net/ont/geosparql#wktLiteral