メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.1000000 34.2041667, 133.1062500 34.2041667, 133.1062500 34.2083333, 133.1000000 34.2083333, 133.1000000 34.2041667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral