メタデータ名 G20493136491
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.0437500 38.7958334, 141.0500000 38.7958334, 141.0500000 38.8000000, 141.0437500 38.8000000, 141.0437500 38.7958334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral