メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.319595855381 43.1183388921369, 141.320150965881 43.1188887114328, 141.319575451005 43.1191970676736, 141.319001574533 43.1195045891629, 141.318950856324 43.1195316752553, 141.318007693358 43.1200253740761, 141.317169364652 43.1192744961264, 141.316847979743 43.1189752405502, 141.3165255795 43.1186735135196, 141.317061683502 43.1183754711946, 141.317597975038 43.1180772869489, 141.318175498435 43.1177757081265, 141.318743995285 43.1174675847354, 141.319410280905 43.1181490497332, 141.319595855381 43.1183388921369)) ^^http://www.opengis.net/ont/geosparql#wktLiteral