メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.2717786394 36.6107300925908, 137.272525178606 36.6106068320661, 137.272549135735 36.6106028663905, 137.272769665986 36.6115793058901, 137.273097252204 36.6115195116743, 137.273329331907 36.612497770976, 137.272265811836 36.6126642751598, 137.271481474865 36.6127989722458, 137.270615159774 36.6120351770088, 137.269014290714 36.6123974402326, 137.268685404723 36.6114602337876, 137.269690366656 36.611226860448, 137.270406190259 36.6110606239418, 137.271422785703 36.6108158192856, 137.2717786394 36.6107300925908)) ^^http://www.opengis.net/ont/geosparql#wktLiteral