メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.806108852799 34.0557510041098, 131.806205803779 34.0559087913268, 131.806610204392 34.0557629078392, 131.806812756521 34.0561454259204, 131.806791798018 34.0561587468793, 131.806428018507 34.0563037644125, 131.80622733074 34.0563838950197, 131.80596076685 34.056502995226, 131.805628533656 34.0559389248792, 131.805496452237 34.0557138339027, 131.80563044399 34.0556561884259, 131.805466353319 34.0553859218545, 131.80539843648 34.0554174182538, 131.805245642341 34.055167753422, 131.805673079421 34.054986862796, 131.806108852799 34.0557510041098)) ^^http://www.opengis.net/ont/geosparql#wktLiteral