メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.349735887382 43.035848406135, 141.34971662648 43.0359461541395, 141.349644466492 43.0365210979882, 141.349178704505 43.0364948556839, 141.347640873006 43.0363831490401, 141.347736023939 43.0357191392036, 141.347821101247 43.0350489289665, 141.349812321838 43.0351842460152, 141.34979665138 43.0354430085108, 141.349735887382 43.035848406135)) ^^http://www.opengis.net/ont/geosparql#wktLiteral