メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.33533447019 43.797621028496, 142.33547409009 43.7975283988021, 142.335705764675 43.7977067350391, 142.335307956668 43.7980020121898, 142.33635190093 43.7987413887113, 142.33438421655 43.7983615656342, 142.333789611175 43.7982499143198, 142.334973428348 43.7973491734117, 142.33533447019 43.797621028496)) ^^http://www.opengis.net/ont/geosparql#wktLiteral