メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.187645984795 35.0786525957229, 137.188758882369 35.0786815471209, 137.188708837437 35.0798531454113, 137.187595879417 35.0796455948733, 137.186732303505 35.0795601089793, 137.186654027558 35.0792356048591, 137.186610948071 35.0790184928815, 137.186585750553 35.0788493370288, 137.186577276814 35.0786662339866, 137.18658725712 35.0786232733785, 137.186630301131 35.0785944614884, 137.186616523538 35.0783763583261, 137.1866433105 35.0781159931378, 137.186825548092 35.0781774425707, 137.187665325653 35.0782116617087, 137.187645984795 35.0786525957229)) ^^http://www.opengis.net/ont/geosparql#wktLiteral