メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.37215479525 43.0872440424959, 141.371980832172 43.0879610415795, 141.371752469533 43.0879332694373, 141.371532111447 43.0879026748756, 141.371104704798 43.0878436244044, 141.37068573826 43.0877917385396, 141.370233784186 43.0877316514954, 141.370408471639 43.0870055881603, 141.370634833981 43.0860480489542, 141.371229988075 43.0861315281533, 141.371808755721 43.0862069297504, 141.372327536415 43.0862835561897, 141.372402596824 43.0862885622622, 141.37215479525 43.0872440424959)) ^^http://www.opengis.net/ont/geosparql#wktLiteral