メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.272425210764 36.7544917033151, 137.272873162484 36.755840054578, 137.272619042587 36.7558956259933, 137.272008869454 36.7560255182128, 137.271098433783 36.7562192779608, 137.270866453867 36.7562677215127, 137.270376647977 36.7563699102945, 137.27010818853 36.7558060367521, 137.269792074406 36.7551337059617, 137.269602151989 36.75474761357, 137.270126343423 36.7546439888271, 137.270794555387 36.7544919271381, 137.271277565082 36.7543790414777, 137.272324259896 36.754163405192, 137.272425210764 36.7544917033151)) ^^http://www.opengis.net/ont/geosparql#wktLiteral