メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((129.811924935102 33.138284367322, 129.811374622282 33.1386632895985, 129.811253841549 33.1385592293125, 129.811490306804 33.1383621806922, 129.811613936706 33.1382421439642, 129.811639139096 33.1381469296046, 129.811924935102 33.138284367322)) ^^http://www.opengis.net/ont/geosparql#wktLiteral