メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.188602981881 43.5274973614867, 142.188535476054 43.5279346462481, 142.188414240113 43.5287199155025, 142.188399836586 43.5289721802892, 142.187486297945 43.529733612451, 142.187380164381 43.5297335557567, 142.185544180513 43.5295961398039, 142.184765915954 43.5295442327922, 142.184815813405 43.529204473743, 142.184926305865 43.5284400499418, 142.185020848341 43.5279406194646, 142.185163886852 43.5267075281042, 142.186137352949 43.5267880195386, 142.187577664265 43.5269047924102, 142.188660103223 43.5269980486874, 142.188602981881 43.5274973614867)) ^^http://www.opengis.net/ont/geosparql#wktLiteral