メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.379150659278 43.7514226188462, 142.378033495334 43.7517450251111, 142.377386082689 43.7506713187656, 142.378004848062 43.7505946838475, 142.377977545797 43.7505567077601, 142.377881626756 43.7504087688787, 142.377802980565 43.7502009863664, 142.377615659301 43.7499744075616, 142.378400744663 43.7496081781701, 142.378585453432 43.7497420926508, 142.378642985384 43.7499406693614, 142.378769386958 43.750317152337, 142.378895820269 43.7507018801587, 142.37901064641 43.7509955894941, 142.379073799414 43.7511569236708, 142.379079657959 43.7512314052115, 142.379150659278 43.7514226188462)) ^^http://www.opengis.net/ont/geosparql#wktLiteral