メタデータ名 C31381-20041001
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.0500000 35.9958334, 139.0562500 35.9958334, 139.0562500 36.0000000, 139.0500000 36.0000000, 139.0500000 35.9958334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral