メタデータ名 dsd
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.8625000 31.4250000, 130.8687500 31.4250000, 130.8687500 31.4291667, 130.8625000 31.4291667, 130.8625000 31.4250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral