メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.180761336664 34.7993136887696, 137.180187632369 34.7994377038516, 137.179613926885 34.7995504478352, 137.179572913081 34.7993701589658, 137.179545538323 34.7990546488407, 137.179395270108 34.798998322665, 137.178848876733 34.7990659870809, 137.178780501916 34.7986152610904, 137.178671131566 34.7980518558554, 137.17917766516 34.7978926413256, 137.179244818058 34.7978715059867, 137.17962728739 34.7978376616503, 137.179950942909 34.7978560794977, 137.180081660842 34.7978945183525, 137.180610845817 34.7980854580896, 137.180761336664 34.7993136887696)) ^^http://www.opengis.net/ont/geosparql#wktLiteral