メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((139.354463381342 34.7684141096492, 139.354531777727 34.7688620265893, 139.354684714478 34.7696889018904, 139.35472183072 34.7700923250974, 139.354330374886 34.7696159510166, 139.354000198466 34.7694519597691, 139.353535685277 34.7693395538901, 139.353237310508 34.7691301885083, 139.353215391086 34.7688309191458, 139.35324120525 34.7684536616641, 139.354026890973 34.7684088689227, 139.354463381342 34.7684141096492)) ^^http://www.opengis.net/ont/geosparql#wktLiteral