メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.380378244819 43.751067322316, 142.379150659278 43.7514226188462, 142.379079657959 43.7512314052115, 142.379073799414 43.7511569236708, 142.37901064641 43.7509955894941, 142.378895820269 43.7507018801587, 142.378769386958 43.750317152337, 142.380184336943 43.7499016994872, 142.380378244819 43.751067322316)) ^^http://www.opengis.net/ont/geosparql#wktLiteral