メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.565022304759 34.8743378075356, 136.565040462391 34.8750523698459, 136.565003988628 34.8755271634874, 136.563641891285 34.8754452083267, 136.562295750727 34.8754033791547, 136.562306680745 34.8750651252135, 136.56229128992 34.8744080881643, 136.562295338686 34.8743814462274, 136.562891496274 34.8743443712964, 136.563598706231 34.8742948028298, 136.564751248497 34.874321678439, 136.565022304759 34.8743378075356)) ^^http://www.opengis.net/ont/geosparql#wktLiteral