<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.6125000 36.6208334, 138.6187500 36.6208334, 138.6187500 36.6250000, 138.6125000 36.6250000, 138.6125000 36.6208334)) ^^http://www.opengis.net/ont/geosparql#wktLiteral