メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.8000000 34.7541667, 133.8062500 34.7541667, 133.8062500 34.7583333, 133.8000000 34.7583333, 133.8000000 34.7541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral