メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.398624178892 43.0305436812731, 141.39929285846 43.0307928375086, 141.400362203625 43.0311508100955, 141.400287173166 43.0311970232753, 141.400138325973 43.0314377861362, 141.399958051771 43.0317118627077, 141.399667151747 43.0321589057318, 141.399566702283 43.0323102676478, 141.399263583975 43.0327670115669, 141.398750609961 43.0325917340438, 141.398417791754 43.0324708939842, 141.398196581516 43.0323905490359, 141.39754843283 43.0321601766813, 141.397274618327 43.0320572135227, 141.397231804001 43.0320474711434, 141.397030781642 43.0319702279157, 141.396684099293 43.031854131845, 141.39705986167 43.0312686156508, 141.397226782265 43.0310112525084, 141.397452816444 43.0306801310883, 141.397751418922 43.0302313225765, 141.398624178892 43.0305436812731)) ^^http://www.opengis.net/ont/geosparql#wktLiteral