メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.8937500 33.6625000, 132.9000000 33.6625000, 132.9000000 33.6666667, 132.8937500 33.6666667, 132.8937500 33.6625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral