メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.9201518751 43.5380521851257, 141.920448149176 43.5385187595894, 141.920705191339 43.5392583959722, 141.920145715952 43.5393754958179, 141.920220075841 43.5399513841285, 141.920003906055 43.5398308244276, 141.919356437592 43.5394696383828, 141.918645828398 43.5390732092136, 141.918667349267 43.5390534041606, 141.918109662233 43.53874349037, 141.917180410769 43.5382110452581, 141.918029144394 43.5374361049036, 141.918147022381 43.5373314523631, 141.918663599304 43.5368727783633, 141.91911700667 43.5364701790869, 141.919170216171 43.5365061270144, 141.9201518751 43.5380521851257)) ^^http://www.opengis.net/ont/geosparql#wktLiteral