メタデータ名
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.7937500 33.1458334, 131.8000000 33.1458334, 131.8000000 33.1500000, 131.7937500 33.1500000, 131.7937500 33.1458334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral