メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.44205799146 43.0542756709348, 141.442394599092 43.0552893299177, 141.442532526468 43.0557378875372, 141.442612762633 43.0559564078582, 141.440412737852 43.0563282410129, 141.440393875667 43.0561070597546, 141.440369991784 43.0556477736201, 141.440356742824 43.0553570037999, 141.440333637299 43.0549406947018, 141.440330865655 43.0548451670125, 141.440308379205 43.0545859802809, 141.440304487228 43.0543422578289, 141.44030416044 43.0540388501464, 141.441895285183 43.0537683527502, 141.44205799146 43.0542756709348)) ^^http://www.opengis.net/ont/geosparql#wktLiteral