メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((137.011032443487 34.9871160068347, 137.011002271279 34.9876852234551, 137.009307787535 34.9878365105601, 137.009315950905 34.9873964283232, 137.009340982334 34.9869169283514, 137.009382943137 34.9864230155286, 137.009414071136 34.9864230558128, 137.011067193807 34.9866218701162, 137.011032443487 34.9871160068347)) ^^http://www.opengis.net/ont/geosparql#wktLiteral