メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.907161751709 43.4849749022957, 141.906929761563 43.485013276354, 141.906863336134 43.4849373732729, 141.906777982105 43.4849289964673, 141.906670188328 43.4849476265994, 141.906621768578 43.4849744867177, 141.906494852272 43.4850903898503, 141.906405515678 43.485127992541, 141.906162080029 43.4851664712813, 141.905811560805 43.4839718373597, 141.905782194336 43.4838717826108, 141.906784862221 43.48371876445, 141.90707701241 43.4846764730178, 141.907161751709 43.4849749022957)) ^^http://www.opengis.net/ont/geosparql#wktLiteral