<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.1687500 36.8541667, 138.1750000 36.8541667, 138.1750000 36.8583333, 138.1687500 36.8583333, 138.1687500 36.8541667)) ^^http://www.opengis.net/ont/geosparql#wktLiteral