メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.485957224509 40.5052288788564, 141.485932453188 40.5052883323983, 141.485519544833 40.5051118871367, 141.484557814592 40.5046961911305, 141.484532553501 40.5045956851242, 141.48429350268 40.504991680267, 141.483515900505 40.5048384298954, 141.483616719841 40.5044406157822, 141.483693285168 40.5044228400278, 141.483790076339 40.5040661713552, 141.484248759753 40.5041350650854, 141.48456548104 40.5042312855724, 141.484930909163 40.5043457694819, 141.4850302328 40.504388901112, 141.485523498147 40.5046258238893, 141.486154145018 40.5049186050207, 141.485957224509 40.5052288788564)) ^^http://www.opengis.net/ont/geosparql#wktLiteral