メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.763700877424 42.8983777303623, 140.763787566327 42.8983770285905, 140.76399297888 42.8983642274596, 140.764128718234 42.8999320770131, 140.764209390826 42.9008643228603, 140.764018502341 42.9008735157054, 140.763119605206 42.9009170318059, 140.762950303671 42.8994013533248, 140.76294863822 42.8993551938312, 140.762275051488 42.8989050223455, 140.761554412865 42.8989841850967, 140.761531485257 42.8984852328662, 140.761968274662 42.8984580769865, 140.763146531345 42.8984042779805, 140.763700877424 42.8983777303623)) ^^http://www.opengis.net/ont/geosparql#wktLiteral