メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.854051785411 35.1044831930338, 136.853250470734 35.1059431180285, 136.853300825831 35.1061785120191, 136.852780523457 35.1062632164375, 136.852631921297 35.1062874080008, 136.852212063331 35.1045315153221, 136.852908439539 35.1044291775656, 136.853918872686 35.1042896956306, 136.854051785411 35.1044831930338)) ^^http://www.opengis.net/ont/geosparql#wktLiteral