メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((131.630524417754 33.2461841440211, 131.6317573077 33.2463327970375, 131.632946116582 33.2464658103399, 131.632845409004 33.2470261397334, 131.632744342059 33.2475371582989, 131.632657706233 33.2480146739714, 131.632540969292 33.2485911116062, 131.631323098082 33.248442669489, 131.630110695134 33.2482849580482, 131.629673750513 33.2482006798093, 131.629196660176 33.2481300950796, 131.629310843979 33.2475633984039, 131.629403648812 33.2470664992224, 131.629513294387 33.2465800827991, 131.629589379888 33.2460903122115, 131.630524417754 33.2461841440211)) ^^http://www.opengis.net/ont/geosparql#wktLiteral