メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((140.712946964262 42.1226073830427, 140.713302956619 42.122881980992, 140.713440849241 42.1234236182147, 140.713550785055 42.1238749866422, 140.714209847423 42.1241087654413, 140.714445295568 42.1256188818359, 140.71428665081 42.1259315983833, 140.712092331939 42.1267119339008, 140.711884489981 42.1228180776226, 140.712342932883 42.1225992812206, 140.712946964262 42.1226073830427)) ^^http://www.opengis.net/ont/geosparql#wktLiteral