メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.7375000 34.7541667, 133.7437500 34.7541667, 133.7437500 34.7583333, 133.7375000 34.7583333, 133.7375000 34.7541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral