メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((129.8000000 33.3041667, 129.8062500 33.3041667, 129.8062500 33.3083333, 129.8000000 33.3083333, 129.8000000 33.3041667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral