メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.008063036566 34.8813711231536, 137.008400728285 34.8816254677185, 137.009489514207 34.8824421216045, 137.009584077196 34.8825130259019, 137.009715385347 34.8825913018574, 137.009514750883 34.8831313146353, 137.007709209448 34.8826418513807, 137.007579384513 34.8825589246257, 137.007408734807 34.8824498849209, 137.007110106705 34.8821306529556, 137.007581756246 34.8809712208276, 137.008063036566 34.8813711231536)) ^^http://www.opengis.net/ont/geosparql#wktLiteral