メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.153156442933 35.0851736459792, 137.153109911634 35.085185753261, 137.152265486107 35.0854008551881, 137.151873035759 35.0844415878029, 137.151767428778 35.0841462734168, 137.151591015529 35.0832218263276, 137.152833471256 35.0831663740377, 137.153509202956 35.0831364678036, 137.15358229372 35.0831314765841, 137.154034726037 35.0849274845826, 137.153156442933 35.0851736459792)) ^^http://www.opengis.net/ont/geosparql#wktLiteral