メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.869968585973 35.388939731683, 136.867880837593 35.3890688266359, 136.867564018173 35.3890772593589, 136.867253679417 35.3891064115779, 136.867000559066 35.3891211299866, 136.866798127884 35.3891144957039, 136.866409150222 35.3891188711191, 136.866052955646 35.3891302296716, 136.865776364011 35.3871316809649, 136.869659776444 35.3867592120345, 136.869968585973 35.388939731683)) ^^http://www.opengis.net/ont/geosparql#wktLiteral