<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.2187500 36.5750000, 138.2250000 36.5750000, 138.2250000 36.5791667, 138.2187500 36.5791667, 138.2187500 36.5750000))
^^http://www.opengis.net/ont/geosparql#wktLiteral
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