メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.649555142752 42.8215708328767, 141.648885838908 42.8221649379703, 141.648377667585 42.8225758249566, 141.647796930063 42.8230549726403, 141.646784207167 42.8224454750791, 141.64732838246 42.8220076366257, 141.647849757192 42.8215606728008, 141.647769592409 42.8214971621045, 141.647743045447 42.8214760633003, 141.647794248078 42.8214325854552, 141.647803697377 42.821438542731, 141.647903090143 42.8213470706853, 141.647932101881 42.8213603051182, 141.647998543468 42.8213069909787, 141.64803480232 42.8213217408575, 141.64807823552 42.8212813864214, 141.648107940074 42.8212921631343, 141.648295144269 42.821081586004, 141.648407866441 42.8211178383249, 141.648797504271 42.8212638588033, 141.649129253385 42.8214040877005, 141.649529659241 42.8215581800363, 141.649555142752 42.8215708328767)) ^^http://www.opengis.net/ont/geosparql#wktLiteral