メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.934987404957 34.8923652480498, 136.933779747964 34.8926405082165, 136.933701570418 34.8926898704078, 136.933435742174 34.8920435118622, 136.933279869542 34.8916442228782, 136.933744059902 34.8915528493619, 136.934919668041 34.8914238847965, 136.93492417072 34.8915787702566, 136.934981706777 34.8922940322608, 136.934987404957 34.8923652480498)) ^^http://www.opengis.net/ont/geosparql#wktLiteral