メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.584174022511 38.9129047570009, 141.584841961781 38.9129315579556, 141.585503718552 38.9129443902068, 141.586668584939 38.9129864813773, 141.586633796662 38.9133333977733, 141.586524703936 38.9144217527473, 141.584704320407 38.9147687969012, 141.584059955918 38.9148987191142, 141.583524856081 38.9150232867456, 141.583461311542 38.9150329158327, 141.583529459714 38.9139615077675, 141.583599496416 38.9128727736718, 141.584174022511 38.9129047570009)) ^^http://www.opengis.net/ont/geosparql#wktLiteral