メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.250231500831 36.6889337275463, 137.249450685095 36.6890453012081, 137.249498301763 36.6882139892792, 137.250194310554 36.688233075532, 137.250186049998 36.6880734006068, 137.25084162447 36.6881218019885, 137.250821537341 36.6882489674331, 137.251379957316 36.6882615975928, 137.251378487705 36.6887650705319, 137.250864675639 36.6888404157474, 137.250231500831 36.6889337275463)) ^^http://www.opengis.net/ont/geosparql#wktLiteral