メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.779343485899 35.4431264499113, 136.77855072972 35.4431550818377, 136.778534999521 35.442954400941, 136.778230227125 35.4429768076646, 136.778209812777 35.4427663579865, 136.77931946439 35.4426802872309, 136.779343485899 35.4431264499113)) ^^http://www.opengis.net/ont/geosparql#wktLiteral