メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.850371267424 37.426111216774, 138.848658230329 37.4267711401677, 138.84802934708 37.4257104098447, 138.847760837443 37.4252717770977, 138.847431180354 37.424741101914, 138.848487927399 37.4249111625772, 138.84981675237 37.4251450312387, 138.849972097091 37.4253905404375, 138.850362562897 37.4260238075542, 138.850371267424 37.426111216774)) ^^http://www.opengis.net/ont/geosparql#wktLiteral