メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.900506983352 35.2499775640544, 136.900598693652 35.2499716381502, 136.900280495341 35.2519689231156, 136.898667786545 35.2519145484488, 136.898661285384 35.2509721973143, 136.898654534148 35.2499950569365, 136.898647939124 35.2495129932697, 136.89864070402 35.2489848718507, 136.900033956294 35.2489917304085, 136.900721762393 35.2489756277251, 136.900506983352 35.2499775640544)) ^^http://www.opengis.net/ont/geosparql#wktLiteral