メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((144.377714743417 42.983962572315, 144.378615775212 42.9841251990628, 144.37842331173 42.98471538354, 144.377650608515 42.9845799037217, 144.37751432112 42.984555505296, 144.375926540169 42.984272022796, 144.376119098321 42.9836728388677, 144.377714743417 42.983962572315)) ^^http://www.opengis.net/ont/geosparql#wktLiteral