メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.866065982545 43.3362244064721, 141.866254234531 43.3368421551342, 141.865881994672 43.3369020944537, 141.864864767268 43.3370603661237, 141.863928408545 43.3372056092785, 141.863707038685 43.3365977336625, 141.863594922736 43.3362818000996, 141.863553911865 43.3361194888221, 141.864605051325 43.3359679517666, 141.865013654374 43.3359167187648, 141.865096203306 43.3358819721154, 141.865177297685 43.3358024939826, 141.865241143675 43.3357276681045, 141.865315915732 43.3357042885128, 141.865393338219 43.3357106665516, 141.865467885991 43.3357263888521, 141.865586630304 43.3357653257391, 141.865728701063 43.3357955497599, 141.865856063971 43.3358088459366, 141.865940572574 43.3358070888594, 141.866065982545 43.3362244064721)) ^^http://www.opengis.net/ont/geosparql#wktLiteral