メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.397702303933 38.4099991243584, 140.398613586242 38.4105769834976, 140.39960039317 38.4112967320347, 140.400898563886 38.4122984534531, 140.401554595615 38.412980648766, 140.401762800939 38.4133370021267, 140.401529169138 38.4137065185999, 140.401202956533 38.4135233042638, 140.400681670378 38.4131162480636, 140.399111291849 38.4119139067289, 140.397893367795 38.4108879668378, 140.397355115121 38.4104087570301, 140.396455365771 38.4095813402591, 140.397157376841 38.4096118136797, 140.397538749049 38.409988806618, 140.397702303933 38.4099991243584)) ^^http://www.opengis.net/ont/geosparql#wktLiteral