メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.1187500 34.2000000, 133.1250000 34.2000000, 133.1250000 34.2041667, 133.1187500 34.2041667, 133.1187500 34.2000000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral