メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((130.504774623911 33.1788892568641, 130.504829186911 33.1790043896566, 130.50488595214 33.1791902625045, 130.504939352117 33.179513140892, 130.504534458963 33.1795358359779, 130.504466276952 33.1795112596318, 130.504218810733 33.1791212994807, 130.504413676367 33.1790535655184, 130.504489993154 33.1790317660653, 130.504774623911 33.1788892568641)) ^^http://www.opengis.net/ont/geosparql#wktLiteral