メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((135.19882029973 34.6904682168538, 135.198418737867 34.6911264738326, 135.197997480674 34.6918100828422, 135.19699151245 34.6913687434014, 135.197203602521 34.691035944678, 135.197421007157 34.6906895861412, 135.197873077647 34.6900011120697, 135.19882029973 34.6904682168538)) ^^http://www.opengis.net/ont/geosparql#wktLiteral