メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.949699712378 42.891420987691, 143.949155882659 42.8913665493078, 143.948563637706 42.8911999498965, 143.947505430347 42.8907837079325, 143.946581419941 42.8904054114361, 143.946278339549 42.8904099085385, 143.945977550544 42.8904979914773, 143.945192388545 42.890899886813, 143.944798467675 42.8910590412865, 143.944558091907 42.8912716906233, 143.938569791898 42.8901269868453, 143.936520277884 42.8897560071959, 143.936603493003 42.8895245949285, 143.937133391655 42.8896022978446, 143.937285035114 42.8895933791875, 143.937703360619 42.8895149782681, 143.943695020446 42.8883048647971, 143.944157523201 42.8885899479267, 143.945119008287 42.8889969682107, 143.94676688176 42.8898718894045, 143.948414408117 42.890746437511, 143.949699712378 42.891420987691)) ^^http://www.opengis.net/ont/geosparql#wktLiteral