メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.242280882927 36.632679596147, 137.243060413862 36.6330802135332, 137.243282210482 36.6332061723069, 137.242083125959 36.6334854119741, 137.241577839342 36.6336227484745, 137.24094796957 36.6338080419621, 137.240558727179 36.6335248195674, 137.24092502827 36.6329642763534, 137.24048756246 36.6321770279412, 137.240893437453 36.6319601937995, 137.242281554685 36.6326781861852, 137.242280882927 36.632679596147)) ^^http://www.opengis.net/ont/geosparql#wktLiteral