メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.713739158906 35.3715902258072, 136.712070936544 35.3716637988486, 136.709902461135 35.3717891837907, 136.70980448796 35.3715407911141, 136.709758434374 35.371430337539, 136.709720902627 35.3713404092285, 136.709713316278 35.3713214369667, 136.709511538732 35.3708071642114, 136.709491876312 35.3707570905479, 136.709285848328 35.3702320949036, 136.713631817614 35.3700375439505, 136.713632098156 35.3700412776295, 136.713668087249 35.3705826641382, 136.713739158906 35.3715902258072)) ^^http://www.opengis.net/ont/geosparql#wktLiteral