メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.335822596975 43.0610829435977, 141.335675078776 43.0616378581252, 141.335609107128 43.0619230897149, 141.335533008194 43.0622521041637, 141.33497263033 43.0621704693446, 141.334527495453 43.0621116271977, 141.334370817592 43.0620903580177, 141.334352417993 43.0620878601957, 141.333961017622 43.0620340877164, 141.334079646527 43.0616054354058, 141.334081587643 43.0615984220718, 141.334128888175 43.0614275061362, 141.334263400689 43.0608644012107, 141.335822596975 43.0610829435977)) ^^http://www.opengis.net/ont/geosparql#wktLiteral