メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.4062500 34.4541667, 133.4125000 34.4541667, 133.4125000 34.4583333, 133.4062500 34.4583333, 133.4062500 34.4541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral