メタデータ名 C15421-19700401
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.1562500 31.4125000, 130.1625000 31.4125000, 130.1625000 31.4166667, 130.1562500 31.4166667, 130.1562500 31.4125000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral