メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.0937500 33.8916667, 133.1000000 33.8916667, 133.1000000 33.8958334, 133.0937500 33.8958334, 133.0937500 33.8916667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral