メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.6125000 33.9958334, 133.6187500 33.9958334, 133.6187500 34.0000000, 133.6125000 34.0000000, 133.6125000 33.9958334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral