メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.010972103579 34.9882517644679, 137.010934740889 34.9888850598263, 137.010085004884 34.9888153778261, 137.009276924333 34.9887670104002, 137.008690996568 34.9887311769168, 137.008698349168 34.9884222275839, 137.008708822153 34.9882524433487, 137.008708409278 34.9881186336867, 137.008727164219 34.9877709645679, 137.008999380562 34.9878011087502, 137.009307787535 34.9878365105601, 137.011002271279 34.9876852234551, 137.010972103579 34.9882517644679)) ^^http://www.opengis.net/ont/geosparql#wktLiteral