メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.351244515001 43.0241608000504, 141.351227638334 43.0243122998082, 141.351194460629 43.0245957525958, 141.349203151251 43.0244636991139, 141.349183712623 43.024462349695, 141.349236936233 43.0240542184798, 141.349353569113 43.0230457519927, 141.350991238107 43.0231506916863, 141.351369669988 43.023177013188, 141.351244515001 43.0241608000504)) ^^http://www.opengis.net/ont/geosparql#wktLiteral