メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.531486341825 39.2230044830389, 140.530243680312 39.2230297769325, 140.530135436752 39.2229255487797, 140.529205099545 39.2210701640856, 140.529024086848 39.2206726230436, 140.531195301938 39.2197782617053, 140.53132474352 39.2207148279155, 140.531343046595 39.2208785031493, 140.531204678595 39.2209489450692, 140.531335249481 39.2225875994761, 140.531486341825 39.2230044830389)) ^^http://www.opengis.net/ont/geosparql#wktLiteral