メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.50745192918 40.5944757161691, 140.508132743648 40.5942933708789, 140.508773139042 40.5952801664063, 140.509498325013 40.5963720373611, 140.509251002006 40.5967967397599, 140.509016133918 40.5971220574145, 140.507745878026 40.5969695784542, 140.50564640796 40.5967819317862, 140.503273612313 40.5965906477367, 140.503325123579 40.5965095292608, 140.503355737906 40.5964313065346, 140.503918794435 40.5954762254232, 140.50449327073 40.5953037286633, 140.505905666586 40.5948875711958, 140.50745192918 40.5944757161691)) ^^http://www.opengis.net/ont/geosparql#wktLiteral