メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.0548118289 34.8618291712017, 137.054521210868 34.8619541958545, 137.054355521952 34.8620345430595, 137.053540574639 34.860935245017, 137.053895174534 34.8605775179186, 137.0548118289 34.8618291712017)) ^^http://www.opengis.net/ont/geosparql#wktLiteral