メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.856374315024 37.4313782547772, 138.856603931452 37.4317776990468, 138.856224508963 37.4319235862693, 138.855520284788 37.4321554932884, 138.855528773062 37.4321727847972, 138.855136393039 37.4324825927406, 138.855088627011 37.4325182181895, 138.854737253951 37.4328060768277, 138.854687110665 37.4327775066065, 138.854525505943 37.4326850676831, 138.854107360911 37.4324593652179, 138.853765481215 37.4322879191086, 138.854109986757 37.431961364054, 138.854601006765 37.4315091999721, 138.855076147597 37.4313220584563, 138.856132479063 37.4309284417121, 138.856374315024 37.4313782547772)) ^^http://www.opengis.net/ont/geosparql#wktLiteral