メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.500370658735 40.5962475584247, 140.501141041296 40.5963027718728, 140.503325123579 40.5965095292608, 140.503273612313 40.5965906477367, 140.502610128887 40.597616783682, 140.501661851505 40.5991633257595, 140.501405889991 40.5995819364966, 140.501113146887 40.6001063351901, 140.50049472685 40.6010882612023, 140.499839228091 40.6006454772284, 140.499464058294 40.600377929639, 140.499294774624 40.6002604269721, 140.499245573339 40.6002373468501, 140.499171939189 40.5986945389138, 140.499184697979 40.5983152598178, 140.499249106112 40.5975183275877, 140.499311537656 40.5971176626929, 140.49939819857 40.5967124246215, 140.499506625533 40.5961805287877, 140.500370658735 40.5962475584247)) ^^http://www.opengis.net/ont/geosparql#wktLiteral