メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.335865067574 43.7564898878071, 142.336092242332 43.756558365491, 142.336268793734 43.7566127813484, 142.336899171714 43.7567989284387, 142.336277963302 43.7578404726263, 142.335644840081 43.7576534987626, 142.335511141937 43.7576150289974, 142.335238729524 43.7575260691555, 142.335232036766 43.7575353030345, 142.334728350614 43.7573851979593, 142.334950997878 43.7569994066137, 142.335343225895 43.756334154745, 142.335618427802 43.7564185954483, 142.335865067574 43.7564898878071)) ^^http://www.opengis.net/ont/geosparql#wktLiteral