メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.341915801493 43.0346260902886, 141.342921810361 43.0346899113011, 141.342906168429 43.0348666676211, 141.342887323934 43.0350199791271, 141.34284645765 43.0353535837548, 141.342769519763 43.0360336999752, 141.342093360624 43.0359915540067, 141.341358068349 43.0359416210928, 141.340803031628 43.0359038762069, 141.340844631989 43.0355797732076, 141.340885019832 43.035227387636, 141.340930215292 43.0348935372002, 141.340971777996 43.034571895565, 141.341286427961 43.034591554847, 141.341915801493 43.0346260902886)) ^^http://www.opengis.net/ont/geosparql#wktLiteral