メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.89489464223 43.0165309436355, 142.893934582299 43.0159493664239, 142.894007336845 43.015886364884, 142.895045098262 43.014946204668, 142.896002847241 43.01553158359, 142.89545054272 43.0160286879834, 142.894972767741 43.0164588388813, 142.89489464223 43.0165309436355)) ^^http://www.opengis.net/ont/geosparql#wktLiteral