メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.379550977028 34.8256754481035, 137.380385110225 34.8256913229498, 137.380369775031 34.8262762123084, 137.380364963258 34.8265837948546, 137.378644834371 34.8265670601241, 137.378664529623 34.8271439295507, 137.377779943689 34.8271419333639, 137.377791095714 34.8265604329763, 137.377815399634 34.8256391490035, 137.377924751371 34.8256412144034, 137.378670584606 34.8256630985885, 137.379085536228 34.8256669590579, 137.379550977028 34.8256754481035)) ^^http://www.opengis.net/ont/geosparql#wktLiteral