メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.899373543198 43.4780793842981, 141.899684150499 43.4790863642096, 141.899497527689 43.4791148389208, 141.899594028129 43.4794509343525, 141.899298447478 43.4794915599606, 141.898072471466 43.4783970742906, 141.898025426169 43.4781888037221, 141.897748273467 43.477332734568, 141.898036940658 43.4772795395813, 141.89865362498 43.4771732676974, 141.898679750589 43.4771892406314, 141.899081100777 43.4771298468561, 141.899373543198 43.4780793842981)) ^^http://www.opengis.net/ont/geosparql#wktLiteral