メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.038949213456 42.9100932601392, 143.039142267249 42.9101059988367, 143.039855373704 42.9101548249589, 143.039965026217 42.910162651203, 143.039788252936 42.9113004432342, 143.038888070526 42.911217595684, 143.038568358693 42.9111882849235, 143.038592267382 42.9108009416717, 143.038612078326 42.9104790325666, 143.038637251608 42.9100709991462, 143.038949213456 42.9100932601392)) ^^http://www.opengis.net/ont/geosparql#wktLiteral