メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.222803214245 34.7130054069477, 135.2232284371 34.7132096394468, 135.223156975015 34.7134175017026, 135.22303759709 34.7137383988538, 135.222647946268 34.7135429207362, 135.222626992295 34.7135333639824, 135.222283172333 34.7133765576847, 135.222539899228 34.7128833771824, 135.222803214245 34.7130054069477)) ^^http://www.opengis.net/ont/geosparql#wktLiteral