メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.621506207922 34.529813815694, 136.620189205747 34.5297304972438, 136.620298200504 34.5293022900011, 136.620402644449 34.5288634002964, 136.620474682118 34.5286334306044, 136.620556094892 34.528474408097, 136.620829104291 34.5278894340036, 136.622050727156 34.528305662852, 136.62163353337 34.5291391474108, 136.621506207922 34.529813815694)) ^^http://www.opengis.net/ont/geosparql#wktLiteral