メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.346935004384 43.7972636309995, 142.347633420051 43.7977473076008, 142.34681691226 43.7983363137741, 142.346774478902 43.7983096800815, 142.345796631791 43.7980922431469, 142.344851701872 43.7979433023316, 142.345317917519 43.7975952076899, 142.345126517812 43.7974483778029, 142.34505600528 43.7974953058083, 142.34486463555 43.7973654940169, 142.344943936906 43.7973015231836, 142.345416928113 43.79696666016, 142.345678404295 43.7967874890525, 142.346045010063 43.7970630697596, 142.346371122479 43.796843356683, 142.346935004384 43.7972636309995)) ^^http://www.opengis.net/ont/geosparql#wktLiteral