メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.37078232419 36.7434208723317, 138.369952103287 36.7437220158064, 138.368257581038 36.7443876130543, 138.367984782637 36.7444989062753, 138.36730424202 36.744764572104, 138.366827054423 36.7437662479195, 138.366585267549 36.7428779480944, 138.36655340029 36.7427897646809, 138.367454944077 36.7418596447146, 138.368166071623 36.7410820201223, 138.368551008276 36.7406726091802, 138.368990954274 36.7401855991988, 138.369334409439 36.7407953388161, 138.37008640296 36.7421510507625, 138.370671409001 36.7432226299772, 138.370775064608 36.7434067824031, 138.37078232419 36.7434208723317)) ^^http://www.opengis.net/ont/geosparql#wktLiteral