メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.24010272309 38.4326218336575, 141.241174650895 38.4328133480212, 141.24119176227 38.4330154360286, 141.241320318909 38.4331768749762, 141.241416232245 38.4341512411779, 141.241352449283 38.4341627255107, 141.240735977922 38.4342569394209, 141.240094653884 38.4343482814657, 141.23822214216 38.4346240767364, 141.237944027223 38.4346737459962, 141.237878139125 38.4343002269898, 141.237858052366 38.4338762934348, 141.237696125157 38.432183937658, 141.23996962012 38.4325986471501, 141.24010272309 38.4326218336575)) ^^http://www.opengis.net/ont/geosparql#wktLiteral