メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((129.8437500 32.6708334, 129.8500000 32.6708334, 129.8500000 32.6750000, 129.8437500 32.6750000, 129.8437500 32.6708334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral