メタデータ名 C54
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.9562500 38.8708334, 139.9625000 38.8708334, 139.9625000 38.8750000, 139.9562500 38.8750000, 139.9562500 38.8708334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral