メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.316617163784 42.2827637281757, 143.31723471063 42.2830186610487, 143.316728771226 42.2836804586086, 143.316699657416 42.2837178674491, 143.316086247742 42.2834613456864, 143.31598875172 42.283420610978, 143.31539776862 42.2831735836416, 143.315430112037 42.2831310808338, 143.315969101498 42.2824962735459, 143.316507755899 42.2827186029414, 143.316617163784 42.2827637281757)) ^^http://www.opengis.net/ont/geosparql#wktLiteral