メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.091835321093 43.5381676787473, 142.090508365667 43.5387091886368, 142.090105387291 43.5381613087114, 142.090550979474 43.5379840251069, 142.089815823036 43.5375392223205, 142.089925198096 43.5372305479747, 142.090020809571 43.5369535347562, 142.090846213032 43.5369968043655, 142.091354546257 43.5369797014142, 142.092248666948 43.5368865927203, 142.092469669165 43.5373641648718, 142.09277070516 43.5377446261079, 142.091835321093 43.5381676787473)) ^^http://www.opengis.net/ont/geosparql#wktLiteral