メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.731883461181 40.7409389682744, 140.725533284898 40.7368962634402, 140.726242847377 40.7356828642874, 140.726503582271 40.7351399306071, 140.726804366504 40.7344944474253, 140.736277636986 40.7353000328112, 140.734476657155 40.7359539202455, 140.733178313978 40.7370091859416, 140.732741399897 40.7378105530662, 140.732522086112 40.7387777342244, 140.731877963703 40.7401256817959, 140.731822365708 40.740639536533, 140.731883461181 40.7409389682744)) ^^http://www.opengis.net/ont/geosparql#wktLiteral