メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.4500000 33.0000000, 130.4562500 33.0000000, 130.4562500 33.0041667, 130.4500000 33.0041667, 130.4500000 33.0000000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral