メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.332740292741 43.1206654416951, 141.332379316424 43.1208636092074, 141.331573524588 43.1213059630582, 141.331067844274 43.1207804958094, 141.330885293883 43.1205909033981, 141.330205931118 43.1199065750652, 141.33063591744 43.119671274329, 141.330997947652 43.1194731216178, 141.331714645274 43.1190809024682, 141.332589226216 43.1199622979779, 141.333101461691 43.1204671349981, 141.332740292741 43.1206654416951)) ^^http://www.opengis.net/ont/geosparql#wktLiteral