メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.946495931606 35.4054177156076, 136.946461078466 35.4057191241157, 136.946447735833 35.4057472681261, 136.946473127574 35.4059316061823, 136.946482636047 35.4060656348365, 136.946553171634 35.4062792099365, 136.946591416416 35.4063709673073, 136.946716395986 35.4066649925811, 136.945075261685 35.4068414150143, 136.945034570881 35.4065352912935, 136.944984637404 35.4062272486373, 136.944945130371 35.4059050715996, 136.944883671214 35.4055894730444, 136.944821087396 35.4052766892568, 136.946564873924 35.4050900316185, 136.946495931606 35.4054177156076)) ^^http://www.opengis.net/ont/geosparql#wktLiteral