メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.366363733016 43.1476885323293, 141.366562877505 43.1479998080017, 141.36699733042 43.148545836778, 141.366618387458 43.1487145787414, 141.366447901728 43.1488278966392, 141.365867010883 43.1493067037315, 141.365633936901 43.1490303292761, 141.365433599848 43.1487153159483, 141.36518723342 43.1483285604754, 141.365025349068 43.1479848684672, 141.364914557746 43.1476282808493, 141.365256965487 43.1475952793619, 141.366296712912 43.147486798946, 141.366363733016 43.1476885323293)) ^^http://www.opengis.net/ont/geosparql#wktLiteral