メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.258019289361 43.1176173656909, 141.258405384408 43.1179705209912, 141.256977568297 43.1188341713638, 141.25609290085 43.1193723249828, 141.25573061752 43.1190552340974, 141.256023863131 43.1188508006033, 141.255711629736 43.1185674104067, 141.255862466984 43.1184716650079, 141.255542801966 43.118178997144, 141.255218361067 43.1179087218584, 141.256630619232 43.117039613017, 141.256520936449 43.1169297237117, 141.25692918872 43.1166712875594, 141.258019289361 43.1176173656909)) ^^http://www.opengis.net/ont/geosparql#wktLiteral