メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.220413527835 36.6353341091367, 137.221193941777 36.6354192968779, 137.221606418907 36.6354838819131, 137.221629003259 36.6354024077524, 137.222073703228 36.6354857053075, 137.221595731167 36.6356519511462, 137.220732171127 36.6359547529651, 137.220703506671 36.636443540526, 137.220359411432 36.6364447538668, 137.2189500683 36.6364421479452, 137.219072187098 36.635703723508, 137.219169391803 36.6351830117936, 137.220413527835 36.6353341091367)) ^^http://www.opengis.net/ont/geosparql#wktLiteral