メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.872546137727 35.0977013384633, 136.874028743345 35.0977926355038, 136.87482692053 35.0978417549769, 136.874848548985 35.0981644595615, 136.874000113137 35.0981147265809, 136.872516070735 35.0980277887433, 136.871316612012 35.0979573736167, 136.871349267494 35.0976276233931, 136.87152607007 35.0976386166655, 136.872546137727 35.0977013384633)) ^^http://www.opengis.net/ont/geosparql#wktLiteral