メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.8250000 34.7916667, 133.8312500 34.7916667, 133.8312500 34.7958334, 133.8250000 34.7958334, 133.8250000 34.7916667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral