メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.050782527262 42.9043755773766, 143.050765193179 42.9043741509479, 143.050000592091 42.9043148548514, 143.049224287069 42.9042530334745, 143.049341288679 42.9032982886441, 143.049384668419 42.9033015736267, 143.049628904825 42.9033231497195, 143.049835323425 42.903253978841, 143.049899253074 42.9033297030888, 143.050315581423 42.903822996702, 143.050782527262 42.9043755773766)) ^^http://www.opengis.net/ont/geosparql#wktLiteral