メタデータ名 G2103
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.3125000 38.8166667, 140.3187500 38.8166667, 140.3187500 38.8208334, 140.3125000 38.8208334, 140.3125000 38.8166667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral