メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.35891033305 45.1312326902296, 142.355947867336 45.1308350640519, 142.3569434352 45.1269191880052, 142.358117975945 45.127073931714, 142.35852155555 45.1270410620246, 142.359200272317 45.1269625068572, 142.359521355697 45.1269621941703, 142.36008792882 45.127050575711, 142.359663001796 45.1285852567779, 142.35891033305 45.1312326902296)) ^^http://www.opengis.net/ont/geosparql#wktLiteral