メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.707759714896 44.3649824130277, 141.707685650128 44.365047523465, 141.707474377526 44.3652383721053, 141.707380187876 44.3653439941793, 141.707273768123 44.3654633031959, 141.707198593116 44.3655475696994, 141.706974484183 44.3658012180428, 141.706416701779 44.3653463963869, 141.705991159945 44.3650072030466, 141.705280696922 44.3644291921104, 141.705765526639 44.3641176591375, 141.706276712774 44.3637906377304, 141.707759714896 44.3649824130277)) ^^http://www.opengis.net/ont/geosparql#wktLiteral