メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.6750000 34.1208334, 133.6812500 34.1208334, 133.6812500 34.1250000, 133.6750000 34.1250000, 133.6750000 34.1208334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral