メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.2562500 42.2500000, 140.2625000 42.2500000, 140.2625000 42.2541667, 140.2562500 42.2541667, 140.2562500 42.2500000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral