メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.177158249446 35.3504979573687, 137.175214478401 35.3498170575499, 137.17543142124 35.349120003985, 137.17567242341 35.3482797788418, 137.176070424257 35.348372564562, 137.176557038838 35.3484927362653, 137.17644963289 35.3490402066215, 137.176834587186 35.3493317229088, 137.177287774607 35.3496590764963, 137.177158249446 35.3504979573687)) ^^http://www.opengis.net/ont/geosparql#wktLiteral