メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((143.522200320418 44.0553598855621, 143.520911628722 44.0557583797284, 143.520923104489 44.0557843270921, 143.520150972351 44.0560225859236, 143.519556052808 44.0551084471742, 143.52031247834 44.0548932287026, 143.522515800937 44.0542604949297, 143.523075459581 44.0550743320378, 143.522772109419 44.0551739739385, 143.522200320418 44.0553598855621)) ^^http://www.opengis.net/ont/geosparql#wktLiteral