メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((138.032224370174 34.7789480440204, 138.033994333776 34.7795643266552, 138.036367128058 34.780366418334, 138.036904886176 34.7805373537644, 138.038233490081 34.7810125839866, 138.038480885084 34.7825656771162, 138.036261169249 34.7818059086466, 138.033389431152 34.7808083701921, 138.031611500111 34.7801937437913, 138.030738389444 34.779899507396, 138.029678870741 34.7795276370388, 138.029990941563 34.778902745037, 138.030299471824 34.7782849298064, 138.032224370174 34.7789480440204)) ^^http://www.opengis.net/ont/geosparql#wktLiteral