メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.332552853903 43.0630959513073, 141.332851521267 43.0631359739244, 141.33318024387 43.0631803156732, 141.333647192577 43.0632433474933, 141.333599757898 43.0634270190042, 141.333574828592 43.0635358298433, 141.333501061598 43.0638579791588, 141.333462102946 43.0640134463602, 141.333358682968 43.0644265054523, 141.332562327056 43.064319053738, 141.331797311986 43.0642133957613, 141.331946908405 43.0636248864984, 141.331986342186 43.0634699161442, 141.332008658894 43.0633821839861, 141.332096908035 43.0630349028789, 141.332552853903 43.0630959513073)) ^^http://www.opengis.net/ont/geosparql#wktLiteral