メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.328642312204 43.0703009502175, 141.328563035446 43.0705980848948, 141.328493066727 43.0708566141482, 141.32761647205 43.0707403215762, 141.326912016398 43.0706406740768, 141.327050104413 43.0700686758421, 141.327126143315 43.0697703205216, 141.327193414398 43.0695064256771, 141.328781697671 43.0697116600836, 141.328642312204 43.0703009502175)) ^^http://www.opengis.net/ont/geosparql#wktLiteral