メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((132.6687500 34.2291667, 132.6750000 34.2291667, 132.6750000 34.2333333, 132.6687500 34.2333333, 132.6687500 34.2291667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral