メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.270584266945 38.3602500000512, 140.270586323598 38.3608630700314, 140.270600010259 38.3610642977117, 140.270639111906 38.3612563564239, 140.270668687939 38.3613737591227, 140.270410630782 38.3611681261693, 140.270127953985 38.3608862167567, 140.270097063187 38.3608349687111, 140.270113667865 38.3607857786131, 140.270260355803 38.3606827311091, 140.270315273396 38.3606210543283, 140.27032299044 38.3605190321522, 140.270309752339 38.3604333797965, 140.270276250147 38.3602745699203, 140.270584266945 38.3602500000512)) ^^http://www.opengis.net/ont/geosparql#wktLiteral