メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.405444307784 40.7656461386005, 141.403016797749 40.7652232305433, 141.400193254067 40.7646901436987, 141.398527850548 40.7644113470766, 141.39777085542 40.7641639578815, 141.394904620065 40.7634470866241, 141.393356337657 40.7630600429761, 141.394685730676 40.7608030107038, 141.40498169267 40.761429893088, 141.405445688703 40.7606279068868, 141.406435124705 40.7606946059204, 141.406323188026 40.7613694680928, 141.406099666518 40.7627550700419, 141.405751801333 40.7642844659135, 141.405444307784 40.7656461386005)) ^^http://www.opengis.net/ont/geosparql#wktLiteral