メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.342124311909 43.0914740615668, 141.342633534185 43.0915422448442, 141.342482944974 43.0921481967144, 141.342369760396 43.0925345274882, 141.341860361473 43.0924583244533, 141.341447234104 43.0924026349519, 141.340865191917 43.0923241729459, 141.340932587289 43.0920627351638, 141.340988885336 43.0918443200076, 141.341098570637 43.0913252523142, 141.342124311909 43.0914740615668)) ^^http://www.opengis.net/ont/geosparql#wktLiteral