メタデータ名
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.3937500 44.1958334, 142.4000000 44.1958334, 142.4000000 44.2000000, 142.3937500 44.2000000, 142.3937500 44.1958334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral