メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.295606613105 43.0703408097974, 141.295794843011 43.0704942898626, 141.295871385762 43.0705566770512, 141.296021911774 43.0706794602647, 141.295144579903 43.0711529132155, 141.294208825052 43.0716810089444, 141.293857182254 43.0714069534956, 141.293788487694 43.0713520158425, 141.293473718643 43.0711005608942, 141.294113027021 43.0707466620624, 141.294439306616 43.0705661091375, 141.294693981858 43.0704251160729, 141.295311020622 43.0700836135605, 141.295606613105 43.0703408097974)) ^^http://www.opengis.net/ont/geosparql#wktLiteral