メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.0562500 33.8916667, 133.0625000 33.8916667, 133.0625000 33.8958334, 133.0562500 33.8958334, 133.0562500 33.8916667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral