メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.332286289875 43.0588225725793, 141.332585251123 43.0588606982742, 141.333129137667 43.058939680163, 141.332980772079 43.0595179341977, 141.332706308444 43.0606470508703, 141.331597210526 43.0604958015884, 141.331150430295 43.0604325730123, 141.331255873794 43.0600065913924, 141.331437233246 43.0593075684229, 141.331526928038 43.0589660666222, 141.331588452611 43.0587318719058, 141.332102299594 43.0587990829012, 141.332286289875 43.0588225725793)) ^^http://www.opengis.net/ont/geosparql#wktLiteral