メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.860785678595 43.3370578551275, 141.860895585231 43.3374546586091, 141.861055567282 43.3374294613453, 141.861103156703 43.3376135265764, 141.860398344806 43.3377204222734, 141.86023963535 43.3371413079867, 141.860034767803 43.3364611178398, 141.860738695745 43.3363518294458, 141.860825536215 43.3366858932215, 141.860720786422 43.3366961573652, 141.860770145007 43.3369430998389, 141.86085689692 43.3369335488035, 141.860888715563 43.3370404125359, 141.860785678595 43.3370578551275)) ^^http://www.opengis.net/ont/geosparql#wktLiteral