メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.348425628086 43.0244070084615, 141.349183712623 43.024462349695, 141.349203151251 43.0244636991139, 141.349135836718 43.0249767223176, 141.349130008066 43.0250214071189, 141.349104050427 43.025177406377, 141.34905689315 43.0255835461715, 141.347716352053 43.0254896428196, 141.347782641899 43.0249427125342, 141.34785302494 43.0243583981123, 141.348425628086 43.0244070084615)) ^^http://www.opengis.net/ont/geosparql#wktLiteral