メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.983636165152 34.8743231769892, 136.982909797769 34.873244992583, 136.98369319759 34.8730436263442, 136.98445491376 34.8728303207274, 136.98488059457 34.8737115446678, 136.983636165152 34.8743231769892)) ^^http://www.opengis.net/ont/geosparql#wktLiteral