メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.304857023226 43.0965192984483, 141.305149626271 43.0967818586687, 141.305456598999 43.097058743659, 141.305112081807 43.0972504768055, 141.304178850017 43.0977698346138, 141.303966157788 43.0978860952094, 141.302913657295 43.0984613949374, 141.302610506948 43.0981858715151, 141.30230958078 43.0978969327508, 141.302218421435 43.0978214187176, 141.30202677276 43.0976344453544, 141.302478086403 43.0973816229218, 141.302732983295 43.0972447630752, 141.303296797415 43.0969464519785, 141.304564476592 43.0962531505541, 141.304812888278 43.0964810966354, 141.304857023226 43.0965192984483)) ^^http://www.opengis.net/ont/geosparql#wktLiteral