メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.7750000 43.4083333, 143.7812500 43.4083333, 143.7812500 43.4125000, 143.7750000 43.4125000, 143.7750000 43.4083333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral