メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.289775866995 43.0706056354556, 141.289308256273 43.0708607331554, 141.288834654779 43.071118311033, 141.288820625998 43.0711259296509, 141.2884624783 43.0713248364815, 141.287951723339 43.0716021420068, 141.287931791279 43.071613086702, 141.287466412442 43.0711914881654, 141.287114908767 43.0708984942038, 141.28794378824 43.0703865058904, 141.288138406442 43.0705289405556, 141.288478809533 43.0703419116878, 141.288586985043 43.0702825484786, 141.289053612129 43.0700228039821, 141.289236447902 43.070170341948, 141.289775866995 43.0706056354556)) ^^http://www.opengis.net/ont/geosparql#wktLiteral