メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.479272192507 43.8757795379393, 142.479931602032 43.8753458528577, 142.480013099414 43.8753424097436, 142.481177549672 43.8762522088016, 142.48148918165 43.8764956645475, 142.481546557099 43.8765451503181, 142.480814246448 43.8770194610578, 142.479669358047 43.8777996880455, 142.478942138938 43.8782728154531, 142.478469844197 43.8779167424671, 142.478106429524 43.8776095766046, 142.478036739478 43.8775554640138, 142.477363879393 43.877032942916, 142.477989474853 43.8766271732265, 142.47841192129 43.8763503499922, 142.478809249464 43.8760899960611, 142.479272192507 43.8757795379393)) ^^http://www.opengis.net/ont/geosparql#wktLiteral