メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((129.7125000 29.6333333, 129.7187500 29.6333333, 129.7187500 29.6375000, 129.7125000 29.6375000, 129.7125000 29.6333333)) ^^http://www.opengis.net/ont/geosparql#wktLiteral