メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.960229984189 37.2323756449662, 138.960104879168 37.2323403691051, 138.959043852999 37.2324408104174, 138.958979698569 37.2321557982945, 138.958870846351 37.23157823329, 138.959947537546 37.2314064899252, 138.959984909757 37.231688226658, 138.960043666736 37.2318092275882, 138.960229984189 37.2323756449662)) ^^http://www.opengis.net/ont/geosparql#wktLiteral