メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.366115250976 43.0686066404053, 141.365001707544 43.068621807398, 141.365205255132 43.0677352585422, 141.365514420062 43.0677754851121, 141.365551781257 43.067645452611, 141.365236984062 43.0675967430421, 141.365249774455 43.0675410705977, 141.366340861072 43.0677055602962, 141.366935109108 43.0677930656348, 141.367287689926 43.0678360133289, 141.367238360062 43.0680718000723, 141.367291628789 43.0680763599922, 141.367181397153 43.068585400439, 141.366128203842 43.0686064586579, 141.366115250976 43.0686066404053)) ^^http://www.opengis.net/ont/geosparql#wktLiteral