メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.326507980043 43.0954701262901, 141.326803956617 43.0958015838223, 141.327089824331 43.0961290205789, 141.327390557708 43.09648287965, 141.326892034297 43.0967292921703, 141.326373388272 43.0969606306808, 141.325972788835 43.0971405261363, 141.325105916622 43.09610552553, 141.324292909115 43.0951853083133, 141.324699652235 43.0950047643837, 141.324784811749 43.0949768302164, 141.325207337483 43.0947868484883, 141.325716625415 43.0945450312033, 141.326507980043 43.0954701262901)) ^^http://www.opengis.net/ont/geosparql#wktLiteral