<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.2187500 36.9250000, 138.2250000 36.9250000, 138.2250000 36.9291667, 138.2187500 36.9291667, 138.2187500 36.9250000)) ^^http://www.opengis.net/ont/geosparql#wktLiteral