メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.72732736252 35.1798445684031, 136.727339391689 35.1801438328496, 136.727351985204 35.180457606386, 136.727354253229 35.1809850712353, 136.725960362248 35.1810141545517, 136.725945606477 35.180767977935, 136.725937629621 35.180497741675, 136.725915414372 35.1798773188244, 136.725904391024 35.1794641869892, 136.727331482073 35.1794292367717, 136.72732736252 35.1798445684031)) ^^http://www.opengis.net/ont/geosparql#wktLiteral