メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.886660028308 35.2490942346378, 136.886676554936 35.2490942028127, 136.888484583168 35.2490907942581, 136.888502156222 35.2504271817041, 136.88732527048 35.2506379737372, 136.88665165151 35.2507529547578, 136.886646781267 35.2506284358213, 136.886664292666 35.249648472696, 136.885737479292 35.2496072963145, 136.885724982906 35.2494787456415, 136.885723842108 35.2490589519494, 136.886660028308 35.2490942346378)) ^^http://www.opengis.net/ont/geosparql#wktLiteral