メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.364476869456 43.1126157948122, 141.365065351009 43.1127016533298, 141.365264496794 43.1127313916589, 141.365049933234 43.1135299628221, 141.364942267737 43.1139522764837, 141.364351888656 43.1138656432571, 141.363139496848 43.1136895921092, 141.36324706422 43.1132749466072, 141.363447920843 43.1124634762242, 141.363524715649 43.1124768688735, 141.364476869456 43.1126157948122)) ^^http://www.opengis.net/ont/geosparql#wktLiteral