メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.330842469429 43.0616120508191, 141.330699336936 43.0622104571834, 141.330692314259 43.0622374773598, 141.330535256689 43.0628432260686, 141.330092263505 43.0627822037168, 141.329660086203 43.0627226728756, 141.329601410353 43.0627146054293, 141.328980952845 43.0626291523037, 141.329018400467 43.0624728303371, 141.329041530471 43.062375822411, 141.329105987124 43.0621068401836, 141.329130546177 43.0620040760669, 141.329283826924 43.0614015345105, 141.329889110496 43.061481025654, 141.330842469429 43.0616120508191)) ^^http://www.opengis.net/ont/geosparql#wktLiteral