メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.32549558476 43.1128586875011, 141.326179388661 43.1135390737568, 141.325827461406 43.1137242114862, 141.325452189772 43.1139230140356, 141.325121418549 43.1140990372767, 141.324681476641 43.1143272027866, 141.324670878892 43.114316989919, 141.32400064819 43.1136727829426, 141.323993460947 43.1136655511421, 141.32331508031 43.1129835082261, 141.324084323044 43.1125807229825, 141.324127017964 43.1125440767926, 141.324455647098 43.1123633969404, 141.324809659209 43.1121798277874, 141.32549558476 43.1128586875011)) ^^http://www.opengis.net/ont/geosparql#wktLiteral