メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.470946421338 40.6030406783441, 140.471155688796 40.6035072603053, 140.471020912706 40.6035359675218, 140.470772717116 40.6035657960504, 140.470301381847 40.6036272899808, 140.470045019937 40.6036563186002, 140.469955610829 40.6032786936176, 140.470034478401 40.6032605779323, 140.469925348524 40.6028681172731, 140.470411444156 40.602782115224, 140.470432031049 40.6028118712311, 140.470988397489 40.6025053677618, 140.471411471861 40.602903173974, 140.470946421338 40.6030406783441)) ^^http://www.opengis.net/ont/geosparql#wktLiteral