メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.913011202285 43.250747957802, 141.913532340226 43.2511502273166, 141.912590708154 43.2518161021576, 141.911461898579 43.2526065533496, 141.911359163606 43.252509069692, 141.911017296014 43.2521707363471, 141.910710389055 43.2518669614486, 141.910333928889 43.2515042626329, 141.91072598328 43.2511467060379, 141.911152067983 43.2509869371559, 141.912208338188 43.2505906833589, 141.912667440268 43.2504883909717, 141.913011202285 43.250747957802)) ^^http://www.opengis.net/ont/geosparql#wktLiteral