メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.363470461587 43.0686395670871, 141.363330096777 43.0686412228283, 141.363650331648 43.067307369109, 141.364045241955 43.0673747777951, 141.364110822806 43.0673835845122, 141.364927295826 43.0674929336508, 141.364983386957 43.0675013145007, 141.365249774455 43.0675410705977, 141.365236984062 43.0675967430421, 141.365551781257 43.067645452611, 141.365514420062 43.0677754851121, 141.365205255132 43.0677352585422, 141.365001707544 43.068621807398, 141.364668786766 43.0686257036367, 141.363470461587 43.0686395670871)) ^^http://www.opengis.net/ont/geosparql#wktLiteral