メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.1562500 33.3791667, 133.1625000 33.3791667, 133.1625000 33.3833333, 133.1562500 33.3833333, 133.1562500 33.3791667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral