メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((133.740667828283 35.0828323387748, 133.740645546359 35.0837996825199, 133.74009517475 35.0838171433615, 133.740013612973 35.0832719946254, 133.739973796636 35.082824731806, 133.740667828283 35.0828323387748)) ^^http://www.opengis.net/ont/geosparql#wktLiteral