メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.775137680153 43.1626204050431, 140.771996396539 43.1604183388108, 140.771987799907 43.1604123206714, 140.771998468985 43.1604040893945, 140.771984200996 43.1603942000641, 140.775359158524 43.1578182502663, 140.775388929321 43.1578426152017, 140.777949258275 43.1599617224399, 140.777159382718 43.160557994144, 140.775657411397 43.1619459085134, 140.775292668416 43.1623717550862, 140.775137680153 43.1626204050431)) ^^http://www.opengis.net/ont/geosparql#wktLiteral