メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.6562500 35.9625000, 140.6625000 35.9625000, 140.6625000 35.9666667, 140.6562500 35.9666667, 140.6562500 35.9625000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral