メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.3125000 34.5875000, 133.3187500 34.5875000, 133.3187500 34.5916667, 133.3125000 34.5916667, 133.3125000 34.5875000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral